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Diversified Electronics

800.727.5646

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WIRING

OPERATION

DIMENSIONS (INCHES)

FOUR CONTROL SWITCHING: Do not remove factory-installed jumper

between terminals 2 and 3. The control switches connected to ter-

minals 3 through 6 are labeled OFF (CS2), LEAD (CS3), LAG (CS4)

and ALARM (CS5). Under normal operation the lead load energizes

when the off and lead control switches close in order. The lag load

energizes when the lag closes and the alarm load energizes when

the alarm switch closes. When all four switches reopen in the proper

order all outputs are de-energized and the lead/lag output designa-

tions reverse.

FIVE CONTROL SWITCHING: Remove factory installed jumper

between terminals 2 and 3. After the jumper has been removed, the

additional control switch is connected to terminal 2. The extra switch

functions as an AUXILIARY OFF (CS1) switch. It is used to prevent

loads from running continuously if the primary OFF (CS2) switch

fails to open properly.

FAULT DETECTION ALGORITHM: If any of the control switches open

or close out of order, the alarm output energizes and a fault detec-

tion algorithm is used to identify the faulty switch. The faulty switch

is then ignored and the OFF, LEAD, and LAG control switch designa-

tions are altered to maintain safe operation.

CONTROL DRAWING 190

*Panel Mount Cutout

*Greenlee punch #60071 or equivalent

1. To maintain intrinsic safety, connect the Controller’s Earth Ground Terminal 8 to the earth ground of the AC Power Supply feeder.

The resistance between the Controller’s Earth Ground Terminal and Earth Ground shall be less than 1 ohm.

2. Maximum distance between Controller and switch contact is 1000 feet.

3. All intrinsically safe wiring shall be separated from non-intrinsically safe wiring. Refer to article 504 of the National Electrical Code

ANSI/NFPA 70 on procedures for intrinsically safe wiring.

4. Switch contact shall be any non-energy storing or generating mechanical switch type device containing no capacitance or inductance.

5. Connections to terminals 5, 6, 9, 10, 11, and 12 are optional. If the Aux. Off switch is omitted, terminals 2 & 3 must be jumpered.

Diversified Electronics

800.727.5646

atcdiversified.com