UPS 120, UPS 150, UPS 250, UPS 300, UPS 301, UPS 500, UPS 600, UPS 750 and UPS 900 Uninterruptible Power Supplies Caterpillar


MMU Master Messages

Usage:

UPS 250 APZ

MMU Master Messages

Table 1
Event Type 
Code  Type  Color 
Alarm  Red 
Notice  Yellow 
Log  Green 

Note: In multiple flywheel systems (MMS), an individual MMU can be in bypass (off-line) without the system being in bypass. If the remaining units are not overloaded, the system will stay on-line.

Table 2
UPS Status 
Code  Status 
AVR 
Bypass 
Discharge 
NC  No Change 
Shutdown 
On-line 

Table 3
Log file Identifiers 
Number  Messages 
300  Series 300 
3001  Series 300 3.2 Firmware 

Support Load Information

If the UPS status is not on-line or if the UPS status is not discharge, the load will be protected during a utility outage.

If the UPS status is automatic voltage regulated (AVR) or if the UPS status is bypass, the load will be powered but not protected from a utility outage.

If the UPS status is shut down, the load will not have power for a certain amount of time regardless of the utility source.

Table 4
Message  Event Type  UPS Status  Description 
_ lost on PCC  A, B  (MMS only) The PCC has lost communication with one of boards in the PCC 
_ closed while regulating error  The bypass contactor (K3) closed while the UPS was online. 
10 Min. Overload _ rated KW  The UPS has gone to bypass due to a power overload condition. 
2 Min. Overload _ rated KW  The UPS has gone to bypass due to a power overload condition. 
30 Sec. Overload _ rated kW  The UPS has gone to bypass due to a power overload condition. 
ATS Command Contact Closed  The ATS Command remote output contact has closed. If more than one remote output is programmed to the ATS Command, this message may be duplicated. 
ATS Command Contact Opened  The ATS Command remote output contact has opened. If more than one remote output is programmed to the ATS Command, this message may be duplicated. 
Building Alarm [1-4] Detected  NC  Customer supplied input to the SIO has closed 
Bypass Contactor Closed  The bypass contactor (K3) has closed. 
Bypass Contactor Failed Open (Low Voltage)  The bypass contactor failed to close due to a low voltage condition. The controller removed the close command to prevent contactor coil damage. 
Bypass Contactor Opened  A, S  The bypass contactor (K3) has opened. 
Bypass Freq Difference Err: _  NC  (Dual Input Only) The bypass and output frequencies are not within 0.5Hz. A transfer to bypass is inhibited. 
Bypass Freq Range Err: _  NC  (Dual Input Only) The bypass source frequency is out of tolerance. 
Bypass Freq. Lock Lost  NC  (Dual Input Only) The bypass source frequency is not detectable. 
Bypass Input Available  NC, B  (Dual Input Only) The bypass source is within tolerance. A transfer to bypass is allowed. 
Bypass Phase Range Err: A: _ B: _ C: _  NC  (Dual Input Only) The bypass source is not in phase with the output. A transfer to bypass is inhibited. 
Bypass Phase Rotation Error  (Dual Input Only) The bypass source phase rotation is incorrect. A transfer to bypass is inhibited. 
Bypass Static Switch Contactor Fail Open (Low V)  NC  The contactor failed to close due to a low voltage condition. The close command was removed to prevent contactor coil damage. 
Bypass Static Switch Contactor has failed open  NC  A Static bypass contactor has failed to close. 
Bypass Static Switch Contactor is stuck closed  NC  A Static bypass contactor failed to open when the bypass voltage went away 
Bypass Static Switch Fuse has failed  NC  A Static bypass fuse indicator is open. 
Bypass Sync OK: A: _ B: _ C: _  (Dual Input Only) During a discharge, the UPS output has synchronized to the bypass source 
Bypass Voltage Range Err: A: _ B: _ C: _  NC  (Dual Input Only) The bypass source voltage is out of tolerance. A transfer to bypass is inhibited. 
Discharge complete Duration: _ sec  The flywheel discharge has ended. The discharge lasted the indicated number of seconds. 
Discharge Disabled  The flywheel is unable to support the load 
Discharge Enabled  The flywheel speed is > 4000 RPM and can support the load 
Discharge ended max. duration exceeded at _ RPM  B, S  The flywheel discharge has ended at the maximum allowed duration. 
Discharge High Trip + DC Bus: _,- DC Bus: _  The UPS discharged due to a high voltage on the DC bus. 
Discharge Low Trip + DC Bus: _, -DC Bus: _  The UPS discharged due to a low voltage on the DC bus. 
Discharge Trip: High phase _ Volts  The UPS discharged due to a voltage transient on the specified phase. 
Discharge Trip: Low phase _ Volts  The UPS discharged due to a voltage transient on the specified phase. 
Discharging  The UPS is discharging. 
Discharging at _ RPM _KW  The UPS is discharging at the specified RPM & KW. 
Fast Voltage Trip Discharge @ _RPM _ KW  The UPS is discharging due to a voltage transient at the specified KW. 
Fast Voltage Trip Discharging at _ RPM  The UPS is discharging due to a voltage transient at the specified KW. 
Fire Alarm Detected  NC  Customer supplied input to the SIO has closed 
Genset Start Breaker is Closed  NC  Customer supplied input to the SIO has closed 
Genset Start Breaker is Open  NC  Customer supplied input to the SIO has closed 
Genset Start Group [A,B,C,D] is Offline  NC  Input from Genset Start Group has opened 
Genset Start Group [A,B,C,D] is Online  NC  Input from Genset Start Group has closed 
Genset Started via Contact  The Genset (GS) Start remote output contact has closed. The Genset (GS) Start remote output contact is independent of the Genset Start option. 
Genset Stopped via Contact  The Genset (GS) Start remote output contact has opened. The Genset (GS) Start remote output contact is independent of the Genset Start option. 
Ground Fault Detected  (3W Only) The UPS has detected a low resistance to ground (ground fault) on the output. 
High room temperature reported  NC  The remote input 'Room Temp.' was engaged. 
Input Current Bypass Overload, A: _% B: _% C: _%  Overload Condition 
Input Current Overload 10 Min.A: _ B: _ C: _  Overload Condition 
Input Current Overload 2 Min.A: _ B:_ C: _  Overload Condition 
Input Current Overload 30 Sec.A: _ B: _ C: _  Overload Condition 
Input Freq Range Err: _  The input voltage (Frequency) has caused the UPS to trip back into discharge. 
Input Over Voltage: A: _ B: _ C: _  The input voltage (RMS) is out of tolerance. If the flywheels were available, the UPS went in to discharge. 
Input Overload phase _ of rated input current  NC  Overload Condition 
Input Power has clockwise phase rotation  The input voltage has the correct phase rotation. (A,B,C) 
Input Power has counterclockwise phase rotation  Phase rotation is C, B, A. The phasing is incorrect and must be corrected before continuing with startup. 
Input source is now the Genset  NC  A remote input indicates that the UPS is being powered by a generator. 
Input source is now the Utility  NC  A remote input indicates that the UPS is being powered by the utility. 
Input Under Voltage: A: _ B: _ C: _  The input voltage (RMS) is out of tolerance. If the flywheels were available, the UPS went in to discharge. 
Input Voltage Range Err: A: _ B: _ C: _  The input voltage (RMS) is out of tolerance. This message usually occurs when the UPS is already in discharge. 
K3 Circuit Breaker Over Current Trip  (MMS Only) The bypass circuit breaker has tripped. 
K3 Circuit Breaker Status Error  NC  The bypass breaker status is incorrect. 
Keyswitch ignored Bypass not available  NC  A transfer to bypass was inhibited due to an invalid bypass source. 
LOAD IS DISABLED No Valid Bypass Source  A transfer to bypass was inhibited to prevent an out of tolerance (RMS, frequency, or phase angle) bypass voltage from being applied to the load. The process resulted in at least a 2 second outage on the output of the UPS. 
LOAD IS DISABLED Phase Rotation Error  A transfer to bypass was inhibited to prevent an out of tolerance (RMS, frequency, or phase angle) bypass voltage from being applied to the load. The process resulted in at least a 2 second outage on the output of the UPS. 
LOAD IS DISABLED System Overload Error  The system is overloaded. The overload problems must be corrected before continuing to start up. 
Operator switched system key switch Online  Operator turned the keyswitch to the On-Line position 
Operator switched system key switch: Bypass  Operator turned the key switch to the Bypass position 
Operator switched system key switch: Reset  Operator turned the key switch to the Reset position 
Operator switched UPS to Bypass at _Of RPM  Operator sent the system to bypass 
Output Current Bypass Overload A: _ B: _ C: _  NC  Overload Condition 
Output Current Overload 10 Min.A: _ B: _ C: _  Overload Condition 
Output Current Overload 2 Min.A: _ B: _ C: _  Overload Condition 
Output Current Overload 30 Sec.A: _ B: _ C: _  Overload Condition 
Output Overload _ rated KW  NC  Overload Condition 
Output Overload phase _ of rated output current  NC  Overload Condition 
Over Frequency Detected @_ Hz  The input voltage (Frequency) is out of tolerance. If the flywheels were available, the UPS went in to discharge. 
Password has expired  NC  The password that was entered via UPSView has timed out. 
Remote Contact Disable Online Inhibit  The remote input that prevents the UPS from going Online has been activated. 
Remote Contact Enable Online Inhibit  L, N  The remote input that prevents the UPS from going Online has been deactivated. 
Remote Contact Request System to Brake  The remote input that stops the flywheel has been activated. 
Remote Contact Request UPS to Spin down  The remote input that places the UPS into bypass spin down has been activated. 
Remotely switched UPS Online  The UPS has been commanded to go Online via a remote input 
Remotely switched UPS to Bypass at _Of RPM  The UPS has been commanded to go to Bypass via a remote input 
Starting voltage phase match, _ KW  The UPS is starting to phase match the output to the input source. 
Starting walk-in to input source, _ KW  The UPS is connected to the input and is starting to transfer the load from the flywheels to the input source. 
Switching in external sync. sense signals  (External Source Synch. Option) The UPS is discharging and synchronizing to an external voltage source. 
Switching in normal bypass source sense signals  (External Source Synch. Option) The UPS is discharging and synchronizing to an external voltage source. 
Synchronize To External Source Enabled  (External Source Synch. Option) A remote input has enabled external source (voltage) synchronization. 
Synchronize To Normal Source Enabled  (External Source Synch. Option) A remote input has disabled external source (voltage) synchronization. 
Sys Fan _ Failure  NC  System Cabinet Fan Failure 
Sys Fuse Failure  NC  A control power fuse in the system cabinet is open 
Sys PS _ Failure  NC  System Cabinet Power Supply Failure 
System _ Fuse Failure.  NC  A control power fuse in the system cabinet is open 
System Power Up  Start-up Message 
System Shutdown  The UPS has transitioned to Shutdown Mode either due to an internal fault or an EMO. 
System will not auto start AC Voltages not in range  The controller is waiting for the input voltages to become valid. 
System will not auto start power level not in range  Overload Condition 
Timeout switching external source relay  B, S  (External Source Synch. Option) The Ext. Synch. relay did not switch during the discharge. 
Timeout waiting for _ to change  The listed contactor did not change states as the controller expected. 
Under Frequency Detected @ _ Hz  The input voltage (Frequency) is out of tolerance. If the flywheels were available, the UPS went in to discharge. 
UPS in Bypass  The UPS has transitioned to Bypass Mode. 
UPS On-line  The UPS is voltage regulating and the flywheels are available to protect the load.. 
UPSNet Master Changed Previous: _ Now: _  NC  Master MMU changed 
Zigzag Circuit Breaker open error    A, B, S  (4W Only) The zigzag circuit breaker is not closed.. 
Zigzag Circuit Breaker Trip    A, B, S  (3W Only) The Zigzag Circuit Breaker is open. 
Zigzag Controller lost frequency lock    (4W Only) The Zigzag controller cannot detect a frequency. The message could be a power down message. 
Zigzag Data lock Lost  A, B, S  (4W only) The main control board is not communicating with the ZZC PWA. 
Zigzag Fuse Blown    A, B, S  (4W only) The Zigzag neutral fuse is open. 
Zigzag K5 contactor error    A, B, S  (4W only) The Zigzag contactor ((K5) did not close within 250ms at the beginning of a discharge. 
Zigzag Overload Relay Trip    A, B, S  (3W Only) The Zigzag Overload Relay has Tripped 

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