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.
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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.
7.2Frequently 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
7.3Power Supply Card
Universal AC Supply
6.4 | Output Control (If Present) |
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| OctL |
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| ALog out |
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| LIM | HI (electrical limit) |
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| (100*) |
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| Lo (electrical limit) |
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| FS (Fail safe) | HI (move to 20mA) |
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| (Overrange or Underrange | LO (move to 4mA) |
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| Off* |
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6.5System Control
(The process meter will have
SctL
| FACT/rSET (Factory | Reset (Selecting this item will reset the |
| Reset) | device to default values and return to |
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| menu) |
IN ~ | IN | ~ |
IN ~ | IN | ~ |
85 - 250 VAC | ||
50/60 Hz | 50/60 Hz | |
10VA | 10VA | |
HOLD | HOLD |
+ |
10W |
HOLD |
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.
14 | 11 |
