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ROC827 Instruction Manual
Issued Mar-06 Power Connections 3-22
The ROC827 should have a minimum of bare wire exposed to prevent
short circuits. Allow some slack when making connections to prevent
strain.
3.5.1 Wiring the DC Power Input Module
Use 12 American Wire Gauge (AWG) wire or smaller for all power
wiring. It is important to use good wiring practice when sizing, routing,
and connecting power wiring. All wiring must conform to state, local, and
NEC codes.
Verify the hook-up polarity is correct.
To make DC power supply connections:
1. Perform the backup procedure described in “Preserving Configuration
and Log Data” in Chapter 6, Troubleshooting.
2. Install a surge protection device at the service disconnect.
3. Remove all other power sources from the ROC827.
4. Install a fuse at the input power source.
5. Remove the terminal block connector from the socket.
6. Insert each bared wire end from either the:
12 Volts dc source into the clamp beneath the appropriate BAT+ /
BAT– termination screw.
24 Volts dc source into the clamp beneath the appropriate BAT+ /
BAT– termination screw. The + terminal should have a similar
fuse to the 12 Volts dc Power Input Module.
– CHG+ – BAT+
12 Volt DC Battery Bank
AC to 12 Volt DC Power Supply
24 Volt DC/12 Volt DC Power Converter
Other 12 Volt DC Nominal Source
BATWIRE.DSF
5 Amp Fuse
Figure 3-5. 12 Volts dc Power Supply and BAT+ / BAT– Wiring
7. Screw each wire into the terminal block.
8. Plug the terminal block connector back into the socket.
9. If you are monitoring an external charge voltage (12 Volts dc Power
Input Module only), wire the CHG+ and CHG– terminal block
connector. Refer to Figure 3-6.