Hunter ACC2 - Decoder Wiring and Operation

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Decoder Wiring and Tips
DECODER OUTPUT MODULE LIGHTS
Each decoder output module is equipped with diagnostic LED
lights. Each light is labeled on the deck lid.
Symbol Activity Type Color and Meaning
Decoder fault
Blinking red:
Decoder has an over-current
or overload
Module or line
activity
Blinking green:
Station active
Blinking red:
Line overload (wire path short)
Also blinks during decoder
update
Communicating
Blinking green:
Two-wire communications
Blinking amber:
Programming port
communications
Solid amber:
Wire test mode
Line status
Blinking green:
Module damaged (replace)
Solid green:
Line is OK
O:
No power to module
WIRE TIES
Wire tie holders are molded into the lower back of the
wiring compartment to secure eld wiring with plastic zip
ties. This provides a strain relief to keep eld wires from
pulling downward on the modules, and keeps the inside
neat and organized.
Additional wire tie holders are provided near the Power
Supply Board for sensor and other connections.
TRANSFORMER FUSE
The transformer uses a replaceable 5 x 20 mm electrical fuse,
located next to the convenient on/o switch. Two spare fuses
are stored in the bottom rear of the facepack frame, under the
sticker labeled “Spare Fuse.”
Replacement fuses are a standard glass body 5 x 20 mm
250V, 2A fast blow, available online or from electronic
appliance retailers and hardware stores.
FLOW EXPANSION MODULE
A2C-F3 ow expansion modules add three additional
hardwired ow inputs to the controller. These modules
may only be added to the lower right module slot, one per
controller, and it is the only module that will t in this slot.
The ow expansion module has DC voltage and polarity,
and the + (or red) connection from the ow sensor must
be connected correctly to the + (positive) terminals on the
module. Finish ow expansion in the Devices, Flow Sensors
menu aer installing the module.
ACC2 Decoder controllers may also read up to six ow sensors
via the two-wire paths using ICD-SEN sensor decoders. The
controller may use any combination of hardwired inputs to
ow terminals, or connection by sensor decoders.