Instruction manual
ControlWave Gas Flow Computer (GFC Plus) Instruction Manual (CI-ControlWave GFC Plus)
2-20 Installation Revised Feb-2013
Terminal Block
Connector TB1
Unplug removable connector TB1 from the CPU/System Controller
board. We recommend you do not plug the connector back into the CPU
until the unit is already installed in the housing.
You can power the ControlWave GFC Plus using a bulk DC power
supply using connections TB1-3 and TB1-4.
Nominal input source operating ranges for the DC power supply are:
+6Vdc (+5.4Vdc to +16.0Vdc nominal operating range)
+12Vdc (+11.4Vdc to +16.0Vdc nominal operating range)
+24Vdc (+21.8Vdc to +28.0Vdc nominal operating range)
Not all ControlWave GFC Plus CPUs support all DC power supplies.
Supported options are:
14MHz Ultra Low Power CPU: Supports +6Vdc or +12Vdc
nominal power supply.
33MHz CPU with Ethernet: Supports +12Vdc nominal or +24Vdc
nominal power supply.
Alternatively, you can power low powered versions of the ControlWave
GFC Plus using a solar panel connected to a user-supplied rechargeable
7AH (6V/12V) lead acid battery.
TB1 connections are:
TB1-1: (Solar Power IN+): Power from 30W or 40W solar panel
(internally wired to recharge a factory-supplied battery). Not
available on units with Ethernet.
TB1-2 = Ground (GND) Not available on units with Ethernet.
TB1-3 = Primary Power: Power from an internal factory-supplied
battery or from an external nominal +6Vdc , +12Vdc or +24Vdc
power supply, depending upon the CPU type.
TB1-4 = Ground (GND)
TB1-5 = Auxiliary Power Out+: for a radio or modem (if
supported). Aux power out enabled when DTR signal for COM2
goes high. Aux Power Out not available on units with Ethernet.
TB1-6 = Ground (GND) for Aux power out.
Figure 2-9 shows the typical wiring at the TB1 block.
Figure 2-9. CPU/System Controller Board (TB1 & TB2) Power Wiring