Alcad AT30 SERIES, Operating And Service Instructions

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INSTALLING THE AT30
19
Auxiliary Relay Board (optional)
The Auxiliary Alarm Relay PC Board (A5), provides two form C contacts
(TB4-1 through TB4-36) for each of the following individual alarms:
•
High DC Voltage
•
Low DC Voltage
•
DC Output Failure
•
AC Failure
•
Ground Fault Detection (positive or negative)
•
Summary Alarm
HVDC HVDC LVDC LVDC
DC OUT
FAILURE
DC OUT
FAILURE AC FAIL AC FAIL
GROUND
DETECT
GROUND
DETECT SUMMARY SUMMARY
C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO C, NC, NO
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Follow the procedure below to wire annunciators to one or more of these
alarm contacts.
PROCEDURE
1. Deenergize and lock out all ac and dc voltages to the AT30. Check with a
voltmeter.
2. Remove the safety shield if supplied.
3. Route your remote annunciator wiring into the enclosure through one of the
unused knockouts in the side of the enclosure.
4. Connect the wiring (use #22-14 AWG) to the appropriate terminals of TB4
on the Auxiliary Relay board (as shown in the drawing above). Strip each
wire 0.25in / 6.4mm and securely tighten the terminal screws. The terminals
are labeled in the non-alarm condition.
5. Replace the safety shield if supplied.
NOTES:
1. Alarm contacts are rated at 0.5A / 125 Vac or Vdc.
2. Terminal block is a compression type, accepting wire sizes #22-14 AWG.
3. Terminals are labeled in non-alarm condition.
4. For a detailed view of the optional Auxiliary Alarm Relay PC Board (A5),
refer to drawing (
JE5091-39
) listed in Appenix C on Page 78.