CVHE-SB-32A 25
10 Defective SCR in a solid state starter.
11 Clean or replace contactor contacts
12 Check the Starter Wiring diagram for other components i.e., power monitoring devices that
may be causing phase loss.
13 The Starter contactors may be too slow to respond to the Start signal. Disabling the phase
rotation will give us more time by taking out the 0.7 highly aggressive circuit but keeping in the
primary phase protection. For Starter software X-13650453-04 Rev. K, the time for detection
of the highly aggressive circuit changed from 0.3 to 0.7 seconds.
Problem 59: Severe Phase Unbalance
Three currents supplied to the Starter module are monitored for unequal Amp
draw. An imbalance in the motor amp draw can cause the motor windings to heat
up. This protection can not be disabled or removed. The Starter module phase
unbalance protection was made less aggressive in starter module X-13650453-09
or later, when the current unbalance trip point was increased from 25% to 30%.
Corrective Action:
1 Check for defective or incorrect CTs.
2 Replace Starter module with improved software with X-13650453-08.
3 Replace Starter module, for possible bad CT input.
4 Local power company problem.
Problem 60: Phase Reversal
Corrective Action:
Phase Rotation Protection is based on clockwise ABC Phasing. UCP2 picks up
current phasing through the Starter module Terminal J5. Four possible causes are:
1 Phases actually reversed
2 Noise on the Link which may inject an illegal state
3 Bad contactor or all the lighting on (1) circuit/phase or (2) of the CT wires reversed on J5.
4 Two of the CT wires reversed on J5.
Problem 61: Printer will not work.
Corrective Action:
1 Verify printer is compatible with a serial 9 pin RS232.
2 Verify printer setup in the CLD is correct. Machine Configuration Menu: Printer Option is
Installed. Service Settings Menu: Set Baud Rate, Parity, Data Bits, Stop Bits, Handshaking.
For Handshaking: XON/XOFF is recommended.
3 Verify the printer settings match the CLD setup. Baud Rate, Parity, Data Bits, Stop Bits, and
Handshaking must be the same as in the CLD.
4 Verify the printer interface is working properly.
~ Verify there is IP communication
~ RxA (Green LED near J1) is IPC receive and should be blinking
~ TxA (Red LED near J1) is IPC transmit and should not be blinking
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