CHAPTER 4: PROGRAMMING S4 ALARMS/CONTROL
PQM POWER QUALITY METER – INSTRUCTION MANUAL 4–57
4.5.9 Miscellaneous
Alarms
FIGURE 4–33: Setpoints Page 4 – Alarms/Control / Miscellaneous
• SERIAL COM1/2 FAILURE ALARM DELAY: If loss of communications to the external
master is required to activate the alarm relay, select a time delay in the range of 5 to
60 seconds. In this case, an absence of communication polling on the RS485
communication port for the selected time delay will generate the alarm condition.
Disable this alarm if communications is not used or is not considered critical. This
alarm is not available on the front RS232 port.
• CLOCK NOT SET ALARM: The software clock in the PQM will remain running for a
period of approximately one hour after power has been removed from the PQM power
supply inputs. Selecting
ON in this message causes a “CLOCK NOT SET ALARM” to
occur at power-up for power losses greater than approximately one hour. Once the
alarm occurs, the clock setting on
S1PQMSETUP\CLOCK\SETTIME&DATE must
be stored to reset the alarm.
• DATA LOG 1 / 2 MEMORY FULL LEVEL: These messages can be used to configure
alarms to indicate that the Data Logger memory is almost full. Separate alarms are
provided for each log. When the log memory reaches the level programmed in this
message a DATA LOG 1 / 2 Alarm will occur.
]] SETPOINTS
]] S4 ALARMS/CONTROL
SETPOINT
] MISCELLANEOUS
]
SERIAL COM1 FAILURE
ALARM DELAY: OFF s
SERIAL COM2 FAILURE
ALARM DELAY: OFF s
CLOCK NOT SET ALARM:
ON
]] SETPOINTS
]] S5 TESTING
SETPOINT
Range: 5 to 60, OFF; Step: 1 sec.
MESSAGE
MESSAGE
MESSAGE
MESSAGE
] CURRENT/VOLTAGE
]
] TIME
]
Range: OFF, ON
MESSAGE
MESSAGE
DATA LOG 1 MEMORY
FULL LEVEL: OFF %
DATA LOG 2 MEMORY
FULL LEVEL: OFF %
] END OF PAGE S4
]
Range: 5 to 60, OFF; Step: 1 sec.
Range: 50 to 100%, OFF; Step: 1 sec.
Range: 50 to 100%, OFF; Step: 1 sec.
Courtesy of NationalSwitchgear.com
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