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Power Distribution Boards are provided with six (6) Terminal Connector Blocks that
function as follows:
TB1 - Primary Power Input: (three-conductor) (from user supplied bulk power source)
TB1-1 = Power+ (Pos. input)
TB1-2 = Power– (Neg. input)
TB1-3 = Chassis (GND)
TB2 - Main Power Output 1: (two-conductor) (to SCM Power Connector TB1)
TB2-1 = PWR1+ to TB1-1 on SCM (+VIN)
TB2-2 = PWR1– to TB1-2 on SCM (–VIN)
TB3 - Main Power Output 2: (two-conductor) (to 21V PS Board Connector TB1)
TB3-1 = PWR2+ to TB1-1 on 21VPS (+VIN)
TB3-2 = PWR2– to TB1-2 on 21VPS (GND)
TB4 - Fused Power Output 1: (two-conductor) (to Digital to Relay I/O Board Connector J1)
TB4-1 = FPWR1+ to J1-10 on D-to-R I/O Bd. (PWR+)
TB4-2 = FPWR1– to J1-9 on D-to-R I/O Bd. (PWR GND)
TB5 - Fused Power Output 2: (two-conductor) (to External Modem/Radio Pwr. Connector)
TB5-1 = FPWR2+ to Radio/Modem Power+
TB5-2 = FPWR2– to Radio/Modem Power– (PWR GND)
TB6 - Fused Power Output 3: (two-conductor) (optional use - similar to TB5)
TB6-1 = FPWR3+ to Radio/Modem Power+
TB6-2 = FPWR3– to Radio/Modem Power– (PWR GND)
Note: F1 is rated at 1.5A and protects the Solar Panel Regulator Circuitry. Fuse
F3 is rated at .5A and protects Fused Power Output 1. F1 and F3 are provided for
Class I, Div. 1 Hazardous Location use Only.
2.3.9.1 Bulk Power Supply Current Requirements
ControlWave EFM electronic flow meters are equipped with a System Controller Module
that accepts either 6Vdc or 12Vdc Bulk Power input. The maximum current required for a
particular ControlWave EFM can be estimated as follows:
CI-ControlWave EFM
Figure 2-33 - Power Distribution Board
Installation & Operation / 2-45
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