Eurotherm 590A SERIES, Product Manual

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8 - 4
8.5.2 START CONDITION
CONDITION REFERENCE START CONDITION
1 PHASE (AUX) ON/OFF
45-65HZ ENABLE/INHIBIT LED ON
3-PHASE (MAINS) ON/OFF LED OFF
NORMAL/OVERCURRENT FAULT ⊗ EITHER
RUN/INHIBIT
ROTATING/STANDSTILL
NORMAL/ALARM
1 2 3 4 5 6 7 CONDITIONS/CHECKS
A NORMAL STOP CONDITION
F ⊗ NORMAL RUN CONDITION
G DRIVE REMAINS IN STOP CONDITION. STATUS LEDS DO
NOT CHANGE WHEN START BUTTON PRESSED.
CHECK:
1. Drive is receiving Start Instruction (Diagnostic 9).
2. Continuity of stop line terminals 31 to 33.
3. Continuity of start line terminals 33 to 34.
H ALARM CONDITION - START INSTRUCTION PRESENT BUT
DRIVE NOT RECEIVING 3-PHASE.
CHECK:*
1. Main contactor is pulled in.
2. Contactor coil connections (terminals D11 and D12).
3. Coil voltage is correct.
4. Coil resistance i.e. not open circuit.
5. All three phases present on drive input terminals L1, L2 and L3.
WARNING! High voltages appear on these terminals.
6. Fuses F2, F3, and F4. WARNING! Isolate Drive from supply
before checking.
I ALARM CONDITION - SPECIAL CASE OF ABOVE ONE PHASE
ONLY MISSING.
CHECK:*
Items 5 and 6 in H above.
J NORMAL RUN CONDITION - SHAFT ROTATING
K DRIVE INHIBITED BY 'ENABLE' SIGNAL AT 32.
CHECK:
1. Drive enable (diagnostic 5).
2. Continuity between terminal 32 and start supply 31 or 32 and
+24V (Nominal) supply 38, as appropriate.
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