McQuay WSC Operating Manual page 75

NOTES:.
1. If a fault occurs that has a Y in the "Controlled Stop" column, and P21 (Controlled Fault Stop) is set to
On, and P9 (Stop Mode) is set to dcL, then the starter will perform a voltage decel to stop. Otherwise it
will coast to stop.
2. If a fault occurs that has a Y in the "Auto Reset" column, and P22 (Auto Fault Reset Time) is set to some
value other than OFF, then the fault will automatically be cleared after the time specified by P22.
3. Manual reset is accomplished by pressing the reset button on the LED display. See Figure 38. A stack
over temperature fault (number 61) requires pressing the reset button located on the stack first.
OM Centrif Micro ΙΙ-5
96 CPU Error – Illegal Instruction Trap
97 CPU Error – Software Watchdog Fault
98 CPU Error – Spurious Interrupt
99 CPU Error – Program Storage Fault
NOTE: If a fault occurs that has a Y in the "Auto Reset" column, and P14 (Auto Fault Reset Time) is set to
some value other than OFF, then the fault will automatically be cleared after the time specified by P14.
Table 31, Faults/Alarms, Solid State Starter
00 No fault
01 UTS (Up To Speed) Time Limit Expired
02 Motor Thermal Overload Trip
10 Phase Rotation Error, not ABC
12 Low Line Frequency
13 High Line Frequency
15 Input power not three phase
21 Low Line L1-L2 Voltage
22 Low Line L2-L3 Voltage
23 Low Line L3-L1 Voltage
24 High Line L1-L2 Voltage
25 High Line L2-L3 Voltage
26 High Line L3-L1 Voltage
27 Phase Loss
28 No Line Voltage
30 I.O.C. (Instantaneous Overcurrent)
31 Overcurrent
37 Current Imbalance
38 Ground Fault
39 No Current at Run
40 Shorted / Open SCR
41 Current While Stopped, Motor Failed To Stop
47 Stack Protection Fault (SCR at Operating Limit)
48 Bypass Contactor Fault (on STOP input)
50 Control Power Low
51 Current Sensor Offset Error
52 Burden Switch Error
60 Thermistor Trip (on DIN#1, Motor Overheat Input)
61 Stack OT Switch Trip (on DIN#2)
71 Analog Input Trip (Not Used)
82 Modbus Timeout (Communication Fault)
95 CPU Error – Parameter Storage Fault
96 CPU Error – Illegal Instruction Trap
97 CPU Error – Software Watchdog Fault
98 CPU Error – Spurious Interrupt
99 CPU Error – Program Storage Fault
Description
Description
Auto Reset
N
N
N
N
Controlled Auto
Stop Reset
- -
Y Y
Y N
N Y
N Y
N Y
N Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
N Y
N Y
N N
Y N
Y Y
Y N
N Y
N N
N N
N Y
Y N
N Y
- N
N N
N N
N N
Y Y
Y Y
N N
N N
N N
N N
N N
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