Specifications/Installation
MAN0971-02-EN
5. Safety
WARNING: Only qualified electrical personnel familiar with the construction and operation of this equipment and the hazards involved
should install, adjust, operate, or service this equipment. Read and understand this manual and other applicable manuals in their entirety
before proceeding. Failure to observe this precaution could result in severe bodily injury or loss of life.
WARNING: To avoid the risk of electric shock or burns, always connect the earth ground before making any other connections.
WARNING: To reduce the risk of fire, electrical shock, or physical injury it is strongly recommended to fuse all Power Sources connected
to the OCS. Be sure to locate fuses as close to the source as possible.
WARNING: Replace fuse with the same type and rating to provide protection against risk of fire and shock hazards.
WARNING: In the event of repeated failure, do not replace the fuse again as a repeated failure indicates a defective condition that will
not clear by replacing the fuse.
WARNING: Battery may explode if mistreated. Do not recharge, disassemble or dispose of in fire.
WARNING: EXPLOSION HAZARD – BATTERIES MUST ONLY BE CHANGED IN AN AREA KNOWN TO BE NON-HAZARDOUS
Power input and output (I/O) wiring must be in accordance with Class I, Division 2 wiring methods of the National Electric Code, NFPA 70
for installations in the U.S., or as specified in Section 18-1J2 of the Canadian Electrical Code for installations within Canada and in
accordance with the authority having jurisdiction.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, and D or Non-hazardous locations only.
WARNING: EXPLOSION HAZARD – Do not disconnect equipment unless power has been switched off or the area is known to be non-
hazardous.
WARNING: EXPLOSION HAZARD – Substitution of components may impair suitability for Class 1, Division 2.
Digital outputs shall be supplied from the same source as the Operator Control Station.
Jumpers on connector JP1 and others shall not be removed or replaced while the circuit is live unless the area is known to be free of
ignitable concentrations of flammable gasses or vapors.
6. Common Cause of Analog Input Tranzorb Failure
A common cause of Analog Input Tranzorb Failure on Analog Inputs Model 2, 3, 4 & 5:
If a 4-20mA circuit is initially wired with loop power, but without a load, the Analog
input could see 24Vdc. This is higher than the rating of the tranzorb. This can be
solved by NOT connecting loop power prior to load connection, or by installing a low-
cost PTC in series between the load and Analog input. See SUP0977-01 for additional
details.
NOTE†: Refers to Model 2 – orange (pg.5,) Models 3 & 4 – J1 (pg.6) and Model 5 – 20mA Analog In (pg.7.)
7. Technical Support
For assistance and manual updates, contact Technical Support at the following locations:
(317) 916-4274
Toll Free: 877-665-5666
http://www.heapg.com
e-mail: techsppt@heapg.com
(+) 353-21-4321-266
http://www.horner-apg.com
e-mail: tech.support@horner-apg.com
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