Connecting Form "C" Dry Contacts - Current Technology ISM Series Installation, Operation And Maintenance Manual

CURRENT TECHNOLOGY ISM
®
Table 4: LED and Display Alarm Status Conditions
Condition
Phase Loss (<80%)
Phase Low (80 to <90%)
Phase High (>110%)
N-G OverVoltage
Frequency Out of Range
% Protection < XX%
Filter/Cap Loss
% Protection XX to YY%
Notes:
* 1 Highest priority takes precedence: I .e . if phase is lost, LED is Off, no blinking even if filter loss . Alarm Condition means the Audible Alarm is ON, Dry Relay Contacts is OFF
(de-energized), and System Alarm LED is ON .
2 % Protection levels of 40% and 75% are default settings which can be changed by the user (M3 System only) . If the Surge Module or Current Rating settings are changed,
the Protection levels will change automatically .
** 3 Subsequent Status message will be displayed on M3 Character and Graphics Displays, where "x" is corresponding Phase (A, B, C or L1, L2) . The Highest Priority condition
will over-write earlier conditions . Messages may be truncated to fit screen area (with T&B acceptance) .
4 Red System Status LED will remain on after Status has returned to normal . User must clear the status by pressing the M3 Cancel button .
5 Alarm Conditions will also be logged in the Events Log .
Connecting Form "C"
Dry Contacts
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INTEGRATED SUPPRESSION MODULE
TM
Corresponding Phase LED
LED Off
LED Short Blink Green (≈25% duty)
LED Long Blink Green (≈75% duty)
N/A
N/A
LED On Red
LED Blink Red once every 2 seconds
LED On Orange
Dry Contacts: All monitoring assemblies have a dual set of Form "C"
dry contacts available for connection to user-provided remote alarm and
monitoring circuits .
The installer must provide the appropriate raceway and wiring for this circuit .
Figure 9 shows shows the Form "C" contact configuration . The annotations on
the diagram match the markings on the blue terminal block .
Alarm
M3 Status Message
Cond
Y "Alarm: Phase x Loss"
Y "Alarm: Phase x Low"
Y "Alarm: Phase x High"
Y "Alarm: N-G Voltage High"
Y "Alarm: Frequency
Out of Range"
Y "Alarm: Protection x Low"
Y "Alarm: Protection Filter x Loss"
N "Alarm: Protection x Reduced"
DRC1
DRC1
Figure 9
• Rated 250V 2A DC, 250V 5A AC, 14-22 AWG
• Rated 250V 2A DC, 250V 5A AC, 14-22 AWG
14
Priority *
1A
1B
1C
2
3
4
5
6
DRC2
DRC2