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GPC Plus Controller
General Information &
Application Guide
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C21 OE331-21-GPC GPC Plus Controller .20 Dia. Description Typ. of 4 6.2“ The OE331-21 General Purpose Con- troller Plus (GPC Plus) is used for con- U3 CX1 CX2 RN1 U2 CX4 1 trolling equipment or processes that U1 U4 TB1 V1 COMM V2 cannot be controlled using HVAC con- T V3 SHLD trollers. The Prism computer front end R CX5 COM1-3 U5 LD6 PAL R1 COMM RS-485 1 software is used to interface with the EPROM RAM R2 COMM LD7 1 TUC-5R PLUS PWR HH R3 (1 MEG) YS101816 REV. 2 LD8 U6 GPC Plus controller functio
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P1 CX1 P2 JP2 CX2 U3 PJ1 CX2 R10 VR1 PJ2 U2 R12 K3 K2 +24VDC-OUT +24VDC-OUT GND C3 C4 C5 LD1 TB1 PWR 24V 24VAC-IN AC-IN K1 K4 GND TB2 V1 V4 C6 VR4 VR5 VR6 TB1 C21 OE331-21-GPCPLUS All Communication Loop Wiring Is Straight Through GPC Plus Controller U3 T To T, R To R, SHLD To SHLD CX1 CX2 RN1 U2 CX4 1 U1 U4 V1 Local Loop RS-485 TB1 COMM V2 9600 Baud T Connect To 24VAC Power V3 SHLD Next Device On For Relay Outputs R CX5 COM1-3 The Local Loop U5 LD6 PAL R1 COMM RS-485 5 Relay Outputs Are 1 EPROM
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ADDRESS ADD ADDRESS ADD ADDRESS ADD This Switch Should Be In The OFF Position 1 As Shown 2 4 8 16 Note: 32 The Power To The Controller Must Be Removed TOKEN NETWORK And Reconnected After Changing The Address Switch Settings In Order For Any Changes To Take Effect. Caution Disconnect All Communication Loop Wiring From The Controller Before Removing Power Controller From The Controller. Reconnect Power And Address Switch Address Switch Shown Is Address Switch Shown Is Then Reconnect Communication
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General Purpose Controller (GPCPlus ) January 31, 2005 Description The GPCPlus is a controller designed to “fill in the blanks” between standard off the shelf programs and minor non-standard applications. An example of a non-standard application might be exhaust fan control, based on building pressure or a simple boiler enable controller based on schedules or outdoor air temperature. The remainder of this document will describe the I/O configurations that are possible and will also include a few
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accesses the configuration for the selected item and a right click accesses the force mode options if any are available. Analog Inputs Relays Analog Outputs 2
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Week Schedules & Holidays 3
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Analog Input Configurations The first five analog inputs and input #7 can be configured in several different ways. Input #6 can be used for Static Pressure and accepts the standard pressure sensor with the phone jack connector, available from WattMaster Controls. The following configurations are available: 1. Thermister Type III Temperature Sensors (Scaled for Fahrenheit) 2. Thermister Type III Temperature Sensors (Scaled for Celsius) 3. 4 – 20ma User Scaled 4. 0 – 5 vdc User Scaled 5. Wall Sens
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8. Read Global Binary Broadcast from another Controller 9. Sensor #6 can be assigned to read Static Pressure Each input is separately configured so combinations of any type of input on the same controller are possible. All readings can be overridden to specific values for test purposes. All thermister sensors can also be calibrated by entering positive or negative offsets to be applied to the current readings. All 4 – 20ma readings can be calibrated if the user has the exact current or resistanc
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Any or all readings can also be “broadcast” to other controllers on the communications loop. For example, the Outdoor Air Temperature is broadcast on channel #2 by any unit that happens to have the sensor attached. If none of the standard package units have the outdoor air sensor attached, you could attach it to the GPCPlus and select it for broadcast on channel #2. All other controllers would “hear” the broadcast and use it in their normal operations. On the other hand, if you are measuring som
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Each input can also have an appendix selected to display with the reading to make them more user friendly. The possible appendix values are: • (None) No Appendix Required • RH% Relative Humidity • % Percentage • °F Degrees Fahrenheit • °C Degrees Celsius • PPM Parts Per Million • PSI Pounds Per Square Inch • “WG Inches of Water Gauge • “ Inches • Ft. Feet • RPM Revolutions Per Minute • VDC Volts Direct Current • BTU British Thermal Units On inputs selected for Binary Input Contact Closure, the u
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Wall Sensor Slide Offset If you have configured a specific input to be connected to one of WattMasters’ standard OE212 or OE213 Flush Mount Wall Sensors which contain the optional slide offset, be sure to enter a value for “Maximum Slide Offset Effect”. This tells the controller how much effect to have on the selected setpoints when the slide is fully deflected up or down. When the slide is in the “center” position, it has no effect on the current setpoints. Note: There are separate outputs on t
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to 72.0°F. If the slide is pushed down, the Hi Limit Setpoint will drop to 70.0°F and the Lo Limit Setpoint to 68.0°F. Push-Button Override If you have configured a specific input to be connected to one of WattMasters’ standard OE211 or OE213 Flush Mount Wall Sensors which contain the optional push-button override, be sure to enter a value for “Push-Button Override Duration”. To use this option you must select which schedule will be affected by the override event. (See screen below). Optimal Sta
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Analog Input #6 This analog input is reserved for Duct Static Pressure. This value can then be used to monitor the duct static or to actually control the duct static using an analog output and driving either inlet vanes or a VFD controller. It is not recommended that you attempt to use relays to control the duct static pressure, although this reading can be selected as a control source on the relay configuration screen. CAUTION: If you select two relays to control duct static, WattMaster Control
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Relay Output Configuration Control Methods Each individual output relay can be configured separately for one of the following methods of control listed below. 0 = Not Configured 1 = On Above High Limit Setpoint and Off Below Low Limit Setpoint 2 = On Above High Limit Setpoint and On Below Low Limit Setpoint 3 = Off Above High Limit Setpoint and On Below Low Limit Setpoint 4 = Off Above High Limit Setpoint and Off Below Low Limit Setpoint 5 = On with Contact Closure on Selected Input 6 = O
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8 = Follow Global Binary Only 9 = Ventilation Control 10 = Lead Relay for Lead/Lag Control 11 = Lag Relay for Lead/Lag Control Control/Reset Sources The Control Source is also selectable. This control source can be an analog value or an on/off contact closure. The list of possible sources is shown below. 0 = Not Configured 1 = Sensor Input #1 2 = Sensor Input #2 3 = Sensor Input #3 4 = Sensor Input #4 5 = Sensor Input #5 6 = Sensor Input #7 7 = Static Pressure 8 = Outdoor Air 9 = Calculated
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such as outdoor air temperature. If no reset is required, simply enter the same values for the Control Source Hi and Lo Limit Setpoints. No Reset Source is required. If you do need the main Control Source Setpoint to reset, this is the range over which the Reset Source must change to cause the controlling setpoint to reset from the Lo Limit to the Hi Limit values you entered. For example: you want to reset the enable/disable point for a boiler enable signal based on the changing outdoor air tem
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Run Time Alarm If the selected relay output is controlling a device that needs periodic maintenance, you can enter a Run Time Alarm Delay period that, once exceeded, generates an alarm condition that will notify the user when it occurs. If you need to protect the equipment you can select the Disable Relay box and the relay will de-activate once this run time has been exceeded. Relay Output Type Some control methods require the relay contacts to be closed when the output is activated, others requ
