Simpson Electric H340 User Manual
Page 11
11
6.5
System Control
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Output Control (If Present)
(The process meter will have pre-loaded coordinates)
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14
The relay cards are directly related to any alarms that occur on the Hawk 3.
The single relay is a “Form C” relay that activates in relationship to “SP1”.
The dual relay is a Form C” relay that activates in relationship to “SP1” &
“SP2”.
The quad relay is a “Form A” relay that activates in relationship to “SP1” through
“SP4”.
NOTE: “SP3” and “SP4” connections share a common.
All relay contacts are rated at 250VAC @ 5 amp maximum. The rating of the
relay contact is intended for resistive circuits only. Use a snubber circuit to
protect the contacts from inductive loads.
7.2
Frequently Asked Questions
What is a Form A or Form C relay?
The form A relay is a 1 contact switch that is either closed or open. The form C
relay has 2 contacts, one of which will be closed and one open. With the fac-
tory defaults used, N.O. on the relay means normally open when the Hawk 3 is
not in alarm. N.C. means normally closed when the Hawk 3 is not in alarm.
What does N.D. and N.E. do to the relay?
The effect of the relay can be reversed by setting the relay action to N.E. (nor-
mally energized) in the menu. When the Hawk 3 is not in alarm, the N.C.
contact will now be open and the N.O contact will be closed. Setting the alarm
response back to N.D. (normally de-energized) will put the contacts back to
their default state.
7.3
Power Supply Card
Universal AC Supply
DC to DC Supply
HOLD
9-36VDC
10W
+
HOLD
~
85 - 250 VAC
10VA
50/60 Hz
IN
IN
~
HOLD
~
85-250VAC
10VA
50/60 Hz
IN
IN
~
3-1/2 Digit 120 VAC Supply
!
The AC power cards are meant to operate from standard 50/60 Hz line power.
The DC to DC power card is an isolated supply that can operate between 9
and 32 volts DC.