GE Multilin PQM User Manual

4–38 PQM POWER QUALITY METER – INSTRUCTION MANUAL
S3 OUTPUT RELAYS CHAPTER 4: PROGRAMMING
• ALARM ACTIVATION: If an alarm indication is required only while an alarm is present,
select unlatched. Once the alarm condition disappears, the alarm and associated
message automatically clear. To ensure all alarms are acknowledged, select latched.
Even if an alarm condition is no longer present, the alarm relay and message can only
be cleared by pressing the key or by sending the reset command via the
computer.
4.4.3 Auxiliary
Relays
• AUXILIARY 1, 2, 3 OPERATION: The terms ‘failsafe’ and ‘non-failsafe’ are defined
above as implemented in the PQM. If an output is required when the PQM is not
operational due to a loss of control power, select failsafe auxiliary operation,
otherwise, choose non-failsafe.
• AUXILIARY 1, 2, 3 ACTIVATION: If an auxiliary relay output is required only while the
selected conditions are present, select unlatched. Once the selected condition
disappears, the auxiliary relay returns to the non-active state. To ensure all conditions
are acknowledged, select latched. If the condition is no longer present, the auxiliary
relay can be reset by pressing the key or by sending the reset command via
the computer.
Since the relays can be assigned to perform many different functions, the PQM
uses a priority system to determine which function will control the relays if they
happen to be assigned to more than one function. The Table below shows the
priority of the functions.
For example, if one of the relays is assigned to an alarm function and it is also
assigned to one of the pulse output parameters, the relay will respond only to the
pulse output function.
RESET
Table 4–4: Auxiliary Relays Activation Priority
PRIORITY FUNCTION
HIGHEST PULSE OUTPUT
↓ ANALOG INPUT MAIN/ALT SELECT
LOWEST ALL ALARM FUNCTIONS
RESET
NOTE
Courtesy of NationalSwitchgear.com

GE Multilin PQM Specifications

General

Brand	GE
Model	Multilin PQM
Category	Measuring Instruments
Language	English