Instruction manual

ControlWave Micro Instruction Manual (CI-ControlWave Micro)
Revised Jun-2013 Installation 2-15
Component
Bulk 24 Vdc
Power Supply
Bulk 12 Vdc
Power Supply
HART/BTI module 250 mA 500 mA
Isolated RTD module 13.5 mA 27 mA
Isolated LLAI module 26.3 mA 52.5 mA
ECOM without modem/radio 22 mA 45 mA
ECOM with modem 56 mA 112 mA
ECOM with FreeWave radio*
272 mA 545 mA
ECOM with modem and FreeWave
radio
*
306 mA 612 mA
* FreeWave radio no longer available
Terminal Block
Connector TB1
Unplug removable connector TB1 from the PSSM and wire DC power
to the connector. We recommend you do not plug the connector back
into the PSSM until the CPU module is already installed in the housing.
TB1 provides three input connections for bulk power:
 TB1-1: (+VIN) (+10.7V to +30V dc for +12V supply) (+21.7V to
+30V dc for +24V supply)
 TB1-2 = (-VIN) (Supply Ground - PSGND)
 TB1-3 = Chassis Ground - CHASSIS ( )
Figure 2-11 shows the typical wiring at the PSSM’s TB1 block.
Figure 2-11. PSSM TB1 Wiring
Note
: As an added precaution, we recommend that you run a #14
AWG wire from the TB1-3 power connection (Ground) to the
same known good earth ground used for the base housing.
2.3.7 Wiring an External Alarm or Annunciator to the Watchdog
Connector (OPTIONAL)
Caution
At this time you can also connect power and watchdog wiring.
However; for safety reasons and to prevent accidental damage to the
your bulk DC power supply, do not connect the pluggable terminal
block connectors TB1 and TB2 to the PSSM until after you install, wire,
and configure the CPU module.
Follow the instructions in Section 2.3.5 General Wiring Guidelines when
wiring connections.
The version of the PSSM shown in Figure 2-9 includes an optional
watchdog connector. The purpose of the watchdog connector is to