Humidity Controller Specification and Installation Instructions HRO20-ESA-210518 Page | 1 Model HRO20 Description The Humidity Controller is an advanced application to control relative humidity for general purpose applications. They are specially designed to control humidifiers and dehumidification equipment. Outputs & Inputs • 4 analog outputs (0-10 Vdc or 2-10 Vdc) • 2 dry contact outputs • External humidity sensor input • Window or external temperature sensor input • Alarm status input • Low signal selector input • Configurable PID Operation & Display • Adjustable setpoint with auto reset from external sensor • Multi level lockable access menu • Lockable setpoint and control mode • Backlit LCD with simple icon and text driven menus • Selectable Celsius or Fahrenheit scale • Humidification and dehumidification indicator HRO20 Technical Specifications Description HRO20 Outputs - Actual humidity (0-100% RH), 0-10 Vdc/2-10 Vdc - Humidity setpoint (0-100% RH), 0-10 Vdc/2-10 Vdc - Humidification proportional control signal, 0-10 Vdc/2-10 Vdc - Dehumidification proportional control signal, 0-10 Vdc/2-10 Vdc - Humidification dry contracts 24 Vac, 1 A max, 3 A in-rush - Dehumidification dry contracts 24 Vac, 1 A max, 3 A in-rush Inputs - 1 window temperature sensor or outside temperature sensor (10 KΩ) - 1 alarm status digital input (24 Vac or dry contact) - 2 configurable analog inputs (0-10 or 2-10Vdc). Refer to steps 22 and 24 for complete list Power supply 22 to 26 Vac 50/60 Hz or 28 to 32 Vdc Power consumption 1 VA Setpoint range 10%-90% RH (in 1% increments) Sensor precision ± 3% or better at 40% RH and 23ºC [73ºF] Proportional band 2%-10% for control signal Electrical connection 0.8 mm2 [18 AWG] minimum Operating condition 0ºC to 40ºC [32ºF to 104ºF], 0-95% RH Storage condition -10ºC to 50ºC [14ºF to 122ºF], 0-95% RH Temperature compensation reset Automatic readjustment of setpoint from a window temperature sensor (SHW0-11), or external temperature sensor (STC8-11 for fresh air duct temp or STO2-11 for outside air temp) Housing degree of protection IP 30 (EN 60529) Weight 130 g. [0.3 lb] Dimensions A = 2.85” | 73mm B = 4.85” | 123mm C = 1.00” | 24mm D = 2.36” | 60mm E = 3.27” | 83mm Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 2 Wiring We strongly recommend that all Neptronic products be wired to a separate grounded transformer and that transformer shall service only Neptronic products. This precaution will prevent interference with, and/or possible damage to incompatible equipment. For more information about wiring the humidistat with various humidifiers, refer to the Wiring - Humidistat and Humidifiers section on page 12. Terminal Description Details 1 Common 2 24 Vac or 30 Vdc 3 Window temperature sensor or outside temperature sensor input (AI3) see step 38 4-6 Not available 7 Common Relay 8 Humidify Contact Output (DO1) 9 Dehumidify Contact Output (DO2) 10 Humidify setpoint analog output (AO4) Note: If dehumidify only is selected, AO4 = 0 V 11 Alarm status digital input (DI1) 12 (AI1) • External setpoint from Neptronic humidifier • External 0-10 or 2-10Vdc signal o external demand o external humidity sensor o low signal selector input (LSS) o averaging see step 22 13 (AI2) • External 0-10 or 2-10Vdc signal o external demand o external high limit o external duct supply in o low signal selector input (LSS) o averaging see step 24 14 Humidify Analog Output (AO1) see step 6 15 Dehumidify Analog Output (AO2) see step 6 16 Actual Humidity Output (0-100% RH) (AO3) Jumpers Jumpers Description JP2 Digital Output Signal Selector A&B = Internal: Digital output signal is linked to internal 24 Vac (same as humidistat) B&C = External: Digital output signal is linked to external 24 Vac (different than humidistat) JP3 Mode Selection A&B = RUN: Humidistat is in Operation Mode. (See Operation Mode page 11) B&C = PGM: Humidistat is in Programming Mode. (See Programming Mode on page 3) Mounting Instructions CAUTION: Remove power to avoid a risk of malfunction. A. Remove the captive screw that’s holding the base and the front cover of the humidistat together. B. Lift the front cover of the humidistat to separate it from the base. C. Pull all wires through the holes in the base. D. Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections. E. Mount the control module on the base and secure using the screw. A E D C B Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 3 Programming Mode The Mode Selector Jumper (JP3) must be set to the "PGM" mode (Programming Mode). Refer to Wiring on page 2. To exit, set the Jumper (JP3) back to the "RUN" mode (Operation Mode). All changes will be saved. Symbols Used in this Manual Humidity Analog Output 1 Temperature Analog Output 2 Analog Input 1 Analog Output 3 Analog Input 2 Analog Output 4 Setpoint and User Control Range: Offset: Increment: 10 to 90% RH Max. ± 5% 0.1% RH Compare the displayed humidity reading with a known value from a humidistat. To offset or calibrate the sensor, use the arrow keys to set the desired humidity reading. This is useful for humidistats installed in areas where the humidity read is slightly different than the room’s actual humidity. For example, a humidistat placed right under the air diffuser. Range: Offset: Increment: 10 to 40ºC [50 to 104ºF] Max. ± 5% 0.1ºC [0.2ºF] Compare the displayed temperature reading with a known value from a thermometer. To offset or calibrate the sensor, use the arrows key to set the desired temperature reading. This is useful for thermostats installed in areas where the temperature read is slightly different than the room’s actual temperature. For example, a thermostat placed right under the air diffuser. Default: Range: Increment: 15% RH 10 to 90% RH 1% RH In Operation Mode, you cannot decrease the setpoint to less than the value set as the minimum humidity setpoint. The minimum value is restricted by the maximum value set in Step 4 “Adjust Maximum User Setpnt”. In other words, the value that is set as the minimum cannot be greater than the maximum value. %RH Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 4 Default: Range: Increment: 65% RH 10 to 90% RH 1% RH In Operation mode, you cannot increase the setpoint to more than the value set as the maximum humidity setpoint. The maximum value is restricted by the minimum value set in Step 3 “Adjust Minimum User Setpnt”. In other words, the value that is set as the maximum cannot be less than the minimum value. Default: Range: No (Unlocked) No (Unlocked), Yes (locked) If set to No, the user setpoint option is not locked and the user can adjust the desired humidity setpoint. If set to Yes, the user setpoint option is locked and the user cannot set the desired humidity setpoint. A lock symbol appears to indicate that the setpoint is locked. Humidity Settings Default: Range: Hu (humidify only) Hu (humidify only), AuTo (Automatic humidify and dehumidify), dEHU (dehumidify only) Select the control mode that you want to authorize to the user. To authorize all the available modes, select AuTo (Automatic Mode). Default: Range: Increment: 40% RH 10 to 90% RH 1% RH Appears only if you have selected Auto or Hu at Step 6 “Adjust Control Mode”. Set the desired humidity setpoint. If the setpoint option was locked at Step 5 “User Setpnt Locked”, a lock symbol is displayed. The setpoint value is restricted by the minimum (Step 3) and maximum (Step 4) values. Default: Range: Increment: 50% RH 10 to 90% RH 1% RH Appears only if you have selected Auto or dEHU at Step 6 “Adjust Control Mode”. Set the desired dehumidify setpoint. If the setpoint option was locked at Step 5 “User Setpnt Locked”, a lock symbol is displayed. The setpoint value is restricted by the minimum (Step 3) and maximum (Step 4) values. Default: Range: Yes (Enable) Yes (Enable), No (Disable) If you select Yes, the user can set the unit to Off. If you select No, the Off selection does not appear. See user Control Mode on page 11. Default: Range: Increment: 5.0% RH 2 to 10% RH (recommended); for special applications, the controller can go to a maximum range of 300% 0.5% RH Appears only if you have selected Auto or Hu at Step 6 “Adjust Control Mode”. Select the desired span for the humidify ramp. Proportional control applies an effort in proportion to how far you are from the setpoint. The closer you get to the setpoint, the less it pushes. A demand of 100% is applied at the beginning of the ramp. For example with a setpoint of 40% and a ramp of 5%, the controller will apply a demand of 100% at 35%RH. The humidify symbol is also displayed. Default: Range: Increment: 5.0% RH 2 to 10% RH (recommended); for special applications, the controller can go to a maximum range of 300% 0.5% RH Appears only if you have selected Auto or dEHU at Step 6 “Adjust Control Mode”. Select the desired span for the dehumidify ramp. Proportional control applies an effort in proportion to how far you are from the setpoint. The closer you get to the Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 5 setpoint, the less it pushes. A demand of 100% is applied at the beginning of the ramp. For example with a setpoint of 50% and a ramp of 5%, the controller will apply a demand of 100% at 45%RH. The dehumidify symbol is also displayed. Default: Range: Increment: 0.3% RH 0.3 to 50% RH 0.1% RH Select the desired dead band value for both humidity and dehumidify ramps. The deadband is the interval of the signal band where no action occurs to prevent repeated activation-deactivation cycles. The humidify and dehumidify symbols are also displayed. The deadband value applies to both the humidify and dehumidify control ramps (e.g. 0.3% for Hum and 0.3% for Dehum). Default: Range: Increment: 0 minutes 0 to 60 minutes 1 minute Appears only if you have selected Auto or Hu at Step 6 “Adjust Control Mode”. Set the integral time for the humidity ramp. The integral control cumulates a factor of the difference between the setpoint and the actual reading in order to give an additional push to the ramp. The humidify symbol is also displayed. Default: Range: Increment: 0 seconds 0. 0 to 300. 0 seconds 0.5 seconds Appears only if you have selected Auto or Hu at Step 6 “Adjust Control Mode”. Set the derivative time for the humidity ramp. Many, if not most, control applications can run perfectly well with just P and I control. The derivative control adds a factor to time scale in order to dampen or try to predict the control effort. As it approaches the setpoint, it settles with a minimum of overshoot. The humidify symbol is also displayed. Default: Range: Increment: 0 minutes 0 to 60 minutes 1 minute Appears only if you have selected Auto or dEHU at Step 6 “Adjust Control Mode”. Set the integral time for the dehumidify ramp. The integral control cumulates a factor of the difference between the setpoint and the actual reading in order to give an additional push to the ramp. The dehumidify symbol is also displayed. Default: Range: Increment: 0 seconds 0. 0 to 300. 0 seconds 0.5 seconds Appears only if you have selected Auto or dEHU at Step 6 “Adjust Control Mode”. Set the derivative time for the dehumidify ramp. Many, if not most, control applications can run perfectly well with just P and I control. The derivative control adds a factor to time scale in order to brake or dampen the control effort. As it approaches the setpoint, it settles in nicely with a minimum of overshoot. The dehumidify symbol is also displayed. Default: Range: Increment: 0 minutes 0 to 120 minutes 1 minute Appears only if you have selected Auto at Step 6 “Adjust Control Mode”. Represents a delay before switching from one mode to the other. For example, if set to 2 minutes and the system is currently humidifying, the system will only switch to dehumidification if the demand for dehumidification is active for 2 consecutive minutes. Analog Outputs (AO1 to AO4) Default: Range: 0.0 Volt 0.0 or 2.0 Volt Appears only if you select Auto or Hu at Step 6 “Adjust Control Mode”. Defines the analog signal for AO1 Humidity Analog Output. Select 0.0 for 0-10Vdc or 2.0 for 2-10Vdc. The humidify symbol is also displayed. Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 6 Default: Range: 0.0 Volt 0.0 or 2.0 Volt Appears only if you select Auto or dEHU at Step 6 “Adjust Control Mode”. Defines the analog signal for AO2 Dehumidification Analog Output. Select 0.0 for 0-10Vdc or 2.0 for 2-10Vdc. The dehumidify symbol is displayed. Default: Range: 0.0 Volt 0.0 or 2.0 Volt Defines the analog signal range for AO3 (Actual Humidity Output). Select 0.0 for 0-10Vdc or 2.0 for 2-10Vdc. The humidify symbol is also displayed. Default: Range: 0.0 Volt 0.0, 2.0 Volt Appears only if you select Auto or Hu at Step 6 “Adjust Control Mode”. Defines the analog signal for AO4 (Humidity Setpoint). Select 0.0 for 0-10Vdc or 2.0 for 2-10Vdc. Select the desired value of the minimum voltage of AO4 output. The humidify symbol is also displayed. Analog Inputs (AI1 and AI2) Default: Range: OFF (input not used) OFF, EHS.0, EHS.2, AEr.0, AEr.2, dEd.0, dEd.2, LSS.0, LSS.2, SPS If an external humidity reading is required, set the input signal type for AI1 (analog input 1) to a value other than OFF. The SPS and LSS options are not available if the control mode is set to "dehumidify" (see step 6). • EHS.0 (0-10Vdc) or EHS.2 (2-10Vdc) = External humidity sensor signal • AEr.0 (0-10Vdc) or AEr.2 (2-10Vdc) = External humidity sensor averaging. If selected, the controller performs an averaging of one of the following combinations depending on the selected options: - Average of AI1 and the internal sensor's reading. (set step 36 to YES) - Average of AI1 and AI2 (set step 24 to AEr.0 or AEr.2) - Average of AI1, AI2 and internal sensor's reading (set step 24 to AEr.0/AEr.2 and set step 36 to YES) • dEd.0 (0-10Vdc) or dEd.2 (2-10Vdc) = External Demand signal • If LSS.0 (0-10Vdc) or LSS.2 (2-10Vdc) = External demand low signal selector. If selected, the controller compares the values of two or three signals and selects the lowest signal. The result of the LSS is provided as an output on AO1 (pin 14). - Lowest signal between AI1 and the internal demand (set step 37 to HuLs). - Lowest signal between AI1 and AI2 (set step 24 to LSS.0 or LSS.2). - Lowest signal between AI1, AI2 and internal demand (set step 24 to LSS.0 or LSS.2 and set step 37 to HuLs) • SPS = External humidity setpoint source. If selected, the controller disables the humidify setpoint (step 7) and uses an external setpoint from a Neptronic humidifier. The external setpoint is used to process the humidity demand. Input not used External Humidity Sensor 0-10 Vdc External Humidity Sensor 2-10 Vdc External Humidity Sensor Averaging (0-10 Vdc) External Humidity Sensor Averaging (2-10 Vdc) External Demand 0-10 Vdc External Demand 2-10 Vdc External Demand Low Signal Selector (0-10 Vdc) External Demand Low Signal Selector (2-10 Vdc) External Setpoint from Neptronic Humidifier Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 7 Range: Offset: Increment: 10 to 90% RH Max. ± 5% 0.1% RH This option appears if you have selected EHS.0, EHS.2, AEr.0, or AEr.2, at Step 22. When the humidistat is connected to analog input (AI1), the display shows the relative humidity percentage read by the external humidity sensor. Adjust the offset by comparing it with a known value humidistat. If the sensor is disconnected or short circuited, then “OFF”, “- - -”, and the alarm symbol are displayed. The humidify symbol is also displayed. Default: Range: OFF (input not used) OFF, dEd.0, dEd.2, AEr.0, AEr.2, LSS.0, LSS.2, HIL.0, HIL.2, dUC.0, dUC.2 Select the input signal type for AI2 (analog input 2). The AEr, LSS, HIL and duC options are not available if the control mode is set to "dehumidify" (see step 6). Please note that if selected options for AI1 and AI2 are similar or conflicting, the AI2 option takes precedence. For example if AI1= EHS and AI2 = AEr, the HRO will ignore the EHS and run using the AEr. Input not used External Demand 0-10 Vdc External Demand 2-10 Vdc External Humidity Sensor Averaging 0-10 Vdc External Humidity Sensor Averaging 2-10 Vdc External Demand Low Signal Selector (0-10 Vdc) External Demand Low Signal Selector (2-10 Vdc) High Limit 0-10 Vdc High Limit 2-10 Vdc Duct Supply In 0-10 Vdc Duct Supply In 2-10 Vdc • AEr.0 (0-10Vdc) or AEr.2 (2-10Vdc) = External humidity sensor averaging. If selected, the controller performs an averaging of one of the following combinations depending on the selected options: - Average of AI2 and the internal sensor's reading (set step 36 to YES) - Average of AI2 and AI1 (set step 22 to AEr.0 or AEr.2) - Average of AI2, AI1 and internal sensor's reading (set step 22 to AEr.0 or AEr.2 and set step 36 to YES) • LSS.0 (0-10Vdc) or LSS.2 (2-10Vdc) = External demand low signal selector. If selected, the controller compares the values of two or three signals and selects the lowest signal. The result of the LSS is provided as an output on AO1 (pin 14). - Lowest signal between AI2 and the internal demand (set step 37 to HuLs) - Lowest signal between AI2 and AI1 (set step 22 to LSS.0 or LSS.2) - Lowest signal between AI2, AI1 and internal demand (set step 22 to LSS.0 or LSS.2 and set step 37 to HuLs) • dEd.0 (0-10Vdc) or dEd.2 (2-10Vdc) = External Demand signal • HIL.0 (0-10Vdc) or HIL.2 (2-10Vdc) = High limit. If selected, the controller compares the demand of the room humidity PID loop with the duct/high limit PID loop and applies the lower of the two. Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 8 • dUC.0 (0-10Vdc) or dUC.2 (2-10Vdc) = Duct supply input. If selected, the controller sequentially passes the demand through two PID loops and a zero span to smooth out the signal. Range: Offset: Increment: 10 to 90% RH Max. ± 5% 0.1% RH This option appears if you have selected AEr.0, AEr.2, HIL.0, HIL.2, dUC.0, or dUC.2 at Step 24. When the humidistat is connected to analog input (AI2), the display shows the relative humidity percentage read by the external humidity sensor. Adjust the offset by comparing it with a known value humidistat. If the sensor is disconnected or short circuited, then “OFF”, “- - -”, and the alarm symbol are displayed. The humidify symbol is also displayed. Default: Range: Increment: 8 seconds 0 to 32 seconds 1 second Appears only if EHS.0, EHS.2 is selected at Step 22 or if HIL.0, HIL.2, dUC.0, or dUC.2 is selected at Step 24. Duct Supply Ramp (AI2) Default: Range: Increment: 0% RH 0 to span (step 28) %RH 1% RH Appears only if dUC.0 or dUC.2 is selected at Step 24. Represents a zero conversion, where a demand of 0% is converted to a minimum setpoint value. For example, if you set this value to 10% and the demand received is 5%, the controller will convert the demand to a setpoint of 14%. Default: Range: Increment: 70% RH Duct supply zero (step 27) to 90% RH 1% RH Appears only if dUC.0 or dUC.2 is selected at Step 24. Represents a span conversion, where a demand of 100% is converted to a maximum setpoint value. For example, if you set this value to 70% and the demand received is 80%, the controller will convert the demand to a setpoint of 70%. Default: Range: Increment: 5.0% RH 2 to 10% RH (recommended); for special applications, the controller can go to a maximum range of 300% 0.5% RH Appears only if dUC.0 or dUC.2 is selected at Step 24. Select the desired proportional ramp for the duct supply humidity. Proportional control applies an effort in proportion to how far you are from the setpoint. The closer you get to the setpoint, the less it pushes. A demand of 100% is applied at the beginning of the ramp. For example, with a setpoint of 40% and a ramp of 5%, the controller will apply a demand of 100% at 35% RH. The humidify symbol is also displayed. Room PID Prop. ramp (step 10) Dead band(step 12) Integral (step 13) Derivative (step 14) Duct Supply PID Setpoint (step 33) Prop. ramp (step 29) Dead band(step 30) Integral (step 31) Derivative (step 32) Zero Span Zero (step 27) Span (step 28) Room Setpoint %RH Setpoint (step 7) Room Humidity %RH Sensor reading Duct Humidity %RH Sensor reading Humidity Controller Specification and Installation Instructions www.neptronic.com Page | 9 Default: Range: Increment: 0.3% RH 0.3 to 50% RH 0.1% RH Appears only if dUC.0 or dUC.2 is selected at Step 24. Select the desired dead band value for the duct supply humidity ramp. The deadband is the interval of the signal band where no action occurs to prevent repeated activation-deactivation cycles. The humidify symbol is also displayed. Default: Range: Increment: 0 minutes 0 to 60 minutes 1 minute Appears only if dUC.0 or dUC.2 is selected at Step 24. Set the integral time for the duct supply humidity ramp. The integral control cumulates a factor of the difference between the setpoint and the actual reading in order to give an additional push to the ramp. The humidify symbol is also displayed. Default: Range: Increment: 0 seconds 0. 0 to 300. 0 seconds 0.5 seconds Appears only if dUC.0 or dUC.2 is selected at Step 24. Set the derivative time for the duct supply humidity ramp. Many, if not most, control applications can run perfectly well with just P and I control. The derivative control adds a factor to the time scale in order to brake or dampen the control effort. As it approaches the setpoint, it settles with a minimum of overshoot. The humidify symbol is also displayed. High Limit/Duct Supply Setpoint (AI2) Default: Range: Increment: 80% RH 10 to 100% RH 1% RH Appears only if HIL.0, HIL.2, dUC.0, or dUC.2 is selected at Step 24. Set the desired duct humidity setpoint within the defined range. If using the duct supply humidity ramp (dUC.0 or dUC.2), the High Limit Setpoint must be higher than the Duct Supply Span at step 28. High Limit Humidity Ramp (AI2) Default: Range: Increment: 5.0% RH 2 to 10% RH (recommended); for special applications, the controller can go to a maximum range of 300% 0.5% RH Appears only if HIL.0, HIL.2, dUC.0, or dUC.2 is selected at Step 24. Select the desired proportional ramp for the high limit ramp. Proportional control applies an effort in proportion to how far you are from the setpoint. The closer you get to the setpoint, the less it pushes. A demand of 100% is applied at the beginning of the ramp. For example with a setpoint of 40% and a ramp of 5%, the controller will apply a demand of 100% at 35%RH. The humidify symbol is also displayed. Default: Range: Increment: 0.3% RH 0.3 to 50% RH 0.1% RH Appears only if HIL.0, HIL.2, dUC.0, or dUC.2 is selected at Step 24. Select the desired dead band value for the duct humidity ramp. The deadband is the interval of the signal band where no action occurs to prevent repeated activation - deactivation cycles. The humidify symbol is also displayed. Next >