SEZ7656E1045B Installation Guide for BACnet MS/TP RTU Terminal with IAQ Control CONTENTS Installation 2 Location 2 Installation 2 BACnet System Overview 3 Terminal, Identification and Function 4 Wiring 4 Screw terminal arrangement and wiring 4 Typical Applications 5 Main outputs wiring 5 Configuring and Status Display Instructions 7 Status display 7 User interface 92 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 INSTALLATION • Remove security screw on bottom of Room Controller cover. • Open unit by pulling on bottom side of Room Controller (Figure 1). • Remove wiring terminals from sticker. • Read the FCC ID and IC label installed in the cover. Location 1. Should not be installed on outside wall. 2. Must be installed away from any direct heat source. 3. Should not be installed near air discharge grill. 4. Should not be affected by direct sun radiation. 5. Nothing should restrict vertical air circulation to Room Controller. Installation 1. Swing open Room Controller PCB to left by pressing PCB locking tabs (Figure 2). 2. Pull out cables 6” out from wall. Ensure wall surface is flat and clean. 4. Insert cable in central hole of base. 5. Align base and mark location of two mounting holes on wall ensuring proper side of base is up. 6. Install anchors in wall. 7. Insert screws in mounting holes on each side of base (Figure 2). 8. Gently swing back circuit board on base and push until tabs lock. 9. Strip each wire 1/4 inch from end. 10. Insert each wire according to wiring diagram. 11. Gently push excess wiring back into hole (Figure 3). 12. Re-Install wiring terminals in correct locations (fig. 3). 13. Re-install cover (top side first) and gently push extra wire length back into hole in wall. 14. Install security screw. • When replacing an existing Room Controller, label the wires before removal of the Room Controller. • Electronic controls are static sensitive devices. Discharge yourself properly before manipulating and installing the Room Controller. • A short circuit or improper wiring may permanently damage the Room Controller or the equipment. • All SEZ7000 series Room Controllers are designed for use as operating controls only and are not safety devices. These instruments have undergone rigorous tests and verification prior to shipping to ensure proper and reliable operation in the field. Whenever a control failure could lead to personal injury and or loss of property, it becomes the responsibility of the user or installer or electrical system designer to incorporate safety devices (such as relays, flow switch, thermal protections, etc…) and or an alarm system to protect the entire system against such catastrophic failures. Tampering with the devices or unintended application of the devices will result in a void of warranty. Figure-1 Opening the Cover Figure-2 Opening the PCB Figure-3 Terminal Block Reinstall3 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 BACNET SYSTEM OVERVIEW Schneider Electric SEZ7260X5x45B Zone controllers are used in conjunction with the SEZ7656X1045B roof top controllers. Combined, they are designed for operating typical; single or multistage RTU’s and their associated local zones. For example, a typical job layout system may feature 3 RTU controllers and a total of 31 zones. This would bring to total number of nodes (individual Com addresses) to 34. RTU 1 would have 10 zones under its command, RTU 2 would have 10 zones under its command and RTU 3 would have 11 zones under its command. Typical BACnet™ Zoning System Installation4 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 TERMINAL, IDENTIFICATION AND FUNCTION BACnet™ Network Connections BACnet™ ComCom +BACnet™ communication bus + connection. BACnet™ ComCom -BACnet™ communication bus – connection. RefRef Communication bus reference terminal. • DO NOT USE FOR OTHER THAN SERVICING ISSUES • DO NOT WIRE SHIELD TO THIS TERMINAL BACnet™ Network Connections Terminal Use Terminal Identification Description 1 – Cool 2Y2Output for cooling / compressor stage number 2. 2 – Cool 1Y1Output for cooling / compressor stage number 1. 3 - FanGOutput for the fan. 4 - 24 V ~ HotRC Power supply of controller, hot side (Delivered from the RTU). 5 - 0 V ~ ComC Power supply of controller, common side. Also used as reference for the analog BPD output when used (Delivered from the RTU). 6- Heat Switch LegRH • 24 VAC switched leg for the heating stages. • If heating stages are part or RTU, install a jumper across RC & RH. • If heating stages are part of separate equipment with a different power supply, feed external switched power leg through RH without installing a jumper across RC & RH. 7 – Heat 1W1 Output for heating stage number 1. 8- Heat 2W2Output for heating stage number 2. 9 – By-pass damperBPDLocal analog 0 - 10 VDC by-pass damper / VFD output. 10 – Economizer Output EC0-10 VDC analog fresh air damper / economizer output. 11 – Static pressureSPLocal analog 0 – 5 VDC static pressure input. 12 – AIAI0-10 VDC analog input for airflow transmitter 13 - RSRS Return air temperature sensor input. If sensor fails, controller will use the on-board thermistor sensor to control if the communication is lost. 14 - ScomScomReference input for DI 1, RS, OS & DS. 15 - OSOSOutside air temperature sensor input. 16 - DSDSDischarge air temperature sensor input. RHW1W2 Y2Y1GRCC BPDECSPAIRSScomOSDS SE7656E Controller Terminals Screw terminal arrangement and wiring5 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 TYPICAL APPLICATIONS Main Outputs Wiring Y2Y1GBPDRSOSDSScom Cool Stage 2 24 VAC 0-10 VDC Bypass Damper Actuator 24V Com Fan Cool Stage 1 Transfo Remote Room Sensor Outdoor Sensor Discharge Air Sensor EC 0-10 VDC Economizer Damper Actuator 24V Com SP 0-5 VDC Static Pressure Transducer 24V Com A1 0-10 VDC Static Pressure Transducer 24V Com Thermostat internal contacts System wiring RCRHW1W2C Heat Stage 1 Heat Stage 2 Jumper Main outputs wiring Wiring notes: Note 1 If the same power source is used for the heating stages, install jumper across RC & RH. Maximum current is 2.0 amps. Note 2 If auxiliary output is used to toggle occupancy of the electronic control card inside the equipment, configure the relay parameter (Aux cont) to the N.O. setting. A second relay can be added for additional functionality of the occupancy output. Note 3 Analog outputs and inputs use a half bridge rectifier. Reference of the control signal is the common of the power supply of the Room Controller. (Terminal C) Note 4 Electromechanical contacts are to be used with the digital inputs. Electronic triacs cannot be used as mean of switching for the input. The switched leg to the input for the input to activate is terminal C (common) Note 5 The transformer of the unit provides power to the Room Controller and the additional loads that will be wired to the Room Controller. Note 6 10K Type 2 NTC sensors are required.6 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 ºCºFKohm -40-40324.3197 -39-38303.6427 -38-36284.4189 -37-35266.5373 -36-33249.8958 -35-31234.4009 -34-29219.9666 -33-27206.5140 -32-26193.9703 -31-24182.2686 -30-22171.3474 -29-20161.1499 -28-18151.6239 -27-17142.7211 -26-15134.3971 -25-13126.6109 -24-11119.3244 -23-9112.5028 -22-8106.1135 -21-6100.1268 ºCºFKohm -20-494.5149 -19-289.2521 -18084.3147 -17179.6808 -16375.3299 -15571.2430 -14767.4028 -13963.7928 -121060.3980 -111257.2044 -101454.1988 -91651.3692 -81848.7042 -71946.1933 -62143.8268 -52341.5956 -42539.4921 -32737.5056 -22835.6316 -13033.8622 ºCºFKohm 03232.1910 13430.6120 23629.1197 33727.7088 43926.3744 54125.1119 64323.9172 74522.7861 84621.7151 94820.7004 105019.7390 115218.8277 125417.9636 135517.1440 145716.3665 155915.6286 166114.9280 176314.2629 186413.6310 196613.0307 ºCºFKohm 206812.4601 217011.9177 227211.4018 237310.9112 247510.4443 257710.0000 26799.5754 27819.1711 28828.7860 29848.4190 30868.0694 31887.7360 32907.4182 33917.1150 34936.8259 35956.5499 36976.2866 37996.0351 381005.7950 391025.5657 ºCºFKohm 401045.3467 411065.1373 421084.9373 431094.7460 441114.5631 451134.3881 461154.2208 471174.0607 481183.9074 491203.7607 501223.6202 511243.4857 521263.3568 531273.2333 541293.1150 551313.0016 561332.8928 571352.7886 581362.6886 591382.5926 Temperature vs. Resistance Chart for 10 Kohm NTC Thermistor (R 25°C = 10K Ω ±3% - B 25/85°C = 3975K±1.5%) Scom RS Remote wiring 1 sensorRemote wiring 4 sensors or Scom DS 10 K or Scom OS or Scom RS or Scom DS 10 K or Scom OS or 10 K10 K 10 K Wiring for 10K Type 2 NTC Thermistor Sensors7 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 CONFIGURING AND STATUS DISPLAY INSTRUCTIONS Status display The Room Controller features a two-line, eight-character display. There is a low backlight level that is always active and can only be seen at night. When left unattended, the Room Controller has an auto scrolling display that shows the current status of the system. Each item is scrolled sequentially with the back lighting in low level mode. Pressing any key will cause the back lighting to come on to high level. Manual scrolling of each menu item is achieved by pressing the Yes (scroll) key repetitively. The last item viewed will be shown on the display for 30 seconds before returning to automatic scrolling. Temperature is automatically updated when scrolling is held. Sequence of auto-scroll status display CLOCK STATUS SYSTEM MODE SCHEDULE STATUS OUTDOOR TEMP. ALARMS Monday 12:00 AM Sys Mode Auto Occupied Outdoor x.x °C or °F DAS Alarm Sys Mode Auto UnoccupiedFA Alrm Sys Mode Heat OverrideSetClock Sys Mode Cool High CO2 Com lost Outdoor air temperature Outdoor air temperature display is only enabled when outdoor air temperature sensor is connected. • A maximum range status display of 50 °C ( 122 °F ) indicates a shorted sensor. Associated functions, such as mode lockouts and economizer function are automatically disabled. • A minimum range status -40 °C ( -40 °F ) is not displayed and indicates a opened sensor or a sensor not connected. Associated functions, such as mode lockouts and economizer function are automatically disabled. Alarms • If alarms are detected, they will automatically be displayed at the end of the status display scroll. • During an alarm message display, the back lit screen will light up at the same time as the message and shut off during the rest of the status display. • Two alarms maximum can appear at any given time. • The priority for the alarms is as follows:8 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 When any of the fan speeds are ON, the FAN LED will illuminate. When heating & reheat is ON, the HEAT LED will illuminate. When cooling is ON, the COOL LED will illuminate. CLOCK STATUS SYSTEM MODE SCHEDULE STATUS OUTDOOR TEMP. ALARMS Monday 12:00 AM Sys Mode Off Occupied Outdoor x.x °C or °F DAS Alarm Sys Mode Auto UnoccupiedFA Alrm Sys Mode Cool OverrideSetClock Sys Mode Heat High CO2 Com lost CURRENT ZONE SEQUENCE RETURN AIR TEMP DISCHARGE AIR TEMP CURRENT STATIC PRESSURE FRESH AIR LEVEL Zone Seq Off RA Temp xx.x °C or °F DA Temp xx.x °C or °F Pressure x.x WC or Pa FA Level xxxxxCFM Zone Seq Cool Zone Seq Cool EFFECTIVE PI HEAT DEMAND AT RTU EFFECTIVE PI COOL DEMAND AT RTU EFFECTIVE CO2 LEVEL AT RTU HIGHEST PI HEAT DEMAND ZONE ADDRESS HIGHEST PI COOL DEMAND ZONE ADDRESS HIGHEST CO2 LEVEL ZONE ADDRESS Heat Out xxx % Cool Out xxx % CO2 Lvl xxxx ppm Heat MAC xxx Cool MAC xxx CO2 MAC xxx Sequence of manual-scroll status display: Manual scroll of each menu item is achieved by pressing the Yes (scroll) key repetitively. The last item viewed will be shown on the display for 30 seconds before returning to automatic scrolling. Temperature is automatically updated when scrolling is held. DAS Alarm Indicates that the discharge air temperature is either too low or too high. FA Alarm Indicates that the Fresh Air Level is either too low or too high. SetClock Indicates that the clock needs to be reset. There has been a power failure which has lasted longer than 6 hours. High CO2 Indicates that the CO2 Level value is higher than the Max CO2 parameter value. Com Lost The communication between devices has been lost (No Communication)9 Schneider Electric | II-SEZ7656E-A4.EN.12.2015.v2 www.schneider-electric.com/buildings December 2015 The YES key is used to confirm a selection, to move onto the next menu item and to manually scroll through the displayed information. The NO key is used when you do not desire a parameter change, and to advance to the next menu item. Can also be used to toggle between heating and cooling setpoints. The MENU key is used to access the Main User Menu or exit the menu. The DOWN arrow key is used to decrease temperature setpoint and to adjust the desired values when configuring the Room Controller. The UP arrow key is used to increase temperature setpoint and to adjust the desired values when configuring the Room Controller. USER INTERFACE User configuring instructions menu The SEZ7656X series of controllers feature an intuitive, menu-driven, back- lit LCD display that walks users and installers through the configuring steps, making the configuring process extremely simple. This menu is typically accessed by the user to set the parameters such as the clock time set, the schedule time events and the system mode. It is possible to bring up the user menu at any time by depressing the MENU key. The status display automatically resumes after exiting the user-configuring menu. If the user pauses at any given time during configuring, Auto Help text is displayed to help and guide the user through the usage and configuring of the controller. Ex.: Press yes key to change cooling temperature setpoint Use the up or down arrow to adjust cooling setpoint Each of the sections in the menu is accessed and configured using 5 keys on the controller cover. The priority for the alarms is as follows: Local Keypad Interface When left unattended for 45 seconds, the display will resume automatic status display scrolling. To turn on the back light, press any key on the front panel. The back lit display will turn off automatically after 45 seconds. Sequence of user menu: OVERRIDE RESUME SYSTEM MODE SETTING SCHEDULE SETTING CLOCK SETTING Override schd? Y/N (Appears only in unoccupied mode) Sys mode set? Y/N Schedule set? Y/N Clock set? Y/N Cancel ovrd? Y/N (Appears only in override mode) Sys mode off Off mode Normal cooling or heating operation disabled. Sys mode auto Automatic mode Automatic changeover mode between heating and cooling operation based on local zone demands voting for RTU system operation. Sys mode cool Cooling mode Cooling operation mode only. Sys mode heat Heating mode Heating operation mode onlyNext >