5.8 Set Phase Changer
For maximum flexibility, a phase changing terminal assembly (consisting of a ter-
minal block and a connector pair assembly} provides termination for a 3-phase
4-wire 240/208 VAC 80 AMP power source, or a single phase 3-wire 120/240
VAC 120 AMP power source.
For 3 phase operation, place the connection plug in the 3 phase (3cf,} position.
For single phase operation, place connector plug in the 1 phase (1 cf,} position.
Changing from three phase to single phase operation also requires changing
the position of the reference source switch
(3cf,/1 cf,} on the Motherboard . This
re-routes the ramp generators to the proper SSR drive.
5.9 Connect Power
Connect power to the COBO 1.2Kw Pack by attaching the appropriate customer
supplied connector to the manufacturer supplied power cable. If no cable is
supplied , install customer cable by removing the top of the unit, connecting the
phase connector for split single phase or three phase operation, and attaching
cable to the power terminal block. In the event of an improper power connec-
tion, the overvoltage circuit disables the power supply regulator and flashes the
power supply indicator, protecting the electronics.
5.10 Fault Protection
If the SSR heat sink overheats, the OverTemp Indicator will turn ON. This shows
that air flow has been blocked or the fan has failed.
Electromagnetic circuit breakers protect the SSAs if there is a short circuit. A
short on any dimmer in the pack will trip the circuit breaker for the dimmer OFF.
Restore circuit operation by clearing the short and turning the circuit breaker
back ON.
5.11 Test Controller
24
Use the Test Controller on the Control Panel to test loads without using a control
console. Set the
'NORMAL/TEST" switch on the Control Panel to 'TEST" and
raise the Test Controller to the required level. All 24 dimmers will be active at the
set level. To turn individual dimmers OFF while using this feature, turn their cir-
cuit breaker OFF.
To activate all dimmers at full, push the PANIC switch on the rear panel next to
the dimmer 24 output.
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