Diagnostics
53RLC-SVU05A-E4
Programmable Relays
(Alarms and Status)
CH530 provides a flexible alarm or
chiller status indication to a remote
location through a hard wired
interface to a dry contact closure.
Four relays are available for this
function, and they are provided
(generally with a Quad Relay Output
LLID) as part of the Alarm Relay
Output Option.
The events/states that can be
assigned to the programmable
relays are listed in the following
table and through a TechView
configuration.
Alarm - Latching
This output is true whenever there
is any active latching shutdown
diagnostic that targets the Unit,
Circuit, or any of the Compressors
on a circuit.
Alarm - NonLatching
This output is true whenever there
is any active non-latching shutdown
diagnostic that targets the Unit,
Circuit, or any of the Compressors
on a circuit.
Alarm
This output is true whenever there
is any active latching or non-
latching shutdown diagnostic that
targets the Unit, Circuit, or any of
the Compressors on a circuit.
Alarm Ckt 1
This output is true whenever there
is any active latching or non-
latching shutdown diagnostic that
targets Circuit 1, or any of the
Compressors on Circuit 1.
Alarm Ckt 2
This output is true whenever there
is any active latching or non-
latching shutdown diagnostic that
targets Circuit 2, or any of the
Compressors on Circuit 2.
Unit Limit Mode
This output is true whenever a
circuit on the unit has been running
in one of the limit modes
continuously for the Limit Relay
debounce time. A given limit or
overlapping of different limits must
be in effect continuously for the
debounce time prior to the output
becoming true. It will become false
if no limits are present for the
debounce time.
Compressor Running
The output is true whenever any
compressor is running.
Circuit 1 Running
The output is true whenever any
compressor of Circuit 1 is running.
Circuit 2 Running
The output is true whenever any
compressor of Circuit 2 is running.
Maximum Capacity
The output is true whenever the
unit has reached maximum capacity
continuously for the Max Capacity
Relay debounce time. The output is
false when the unit is not at
maximum capacity continuously for
the fitler debounce time.
Head Pressure Relief Request
This relay output is energized
anytime the chiller or a single
circuit on the chiller is running in
one of the following modes; Ice
Making Mode, or Condenser
Pressure Limit continuously for the
duration specified by the Chiller
Head Relief Relay Filter Time. The
Chiller Head Relief Relay Filter Time
is a service setpoint. The relay
output is de-energized anytime the
chiller exits all above modes
continuously for the duration
specified by the same Chiller Head
Relief Relay Filter Time
None:
This selection is desireable to
provide an easy way for a customer
to defeat the effect of the relay, if it
has already been wired. For
instance, if the relay was normally
programmed as an "alarm" relay,
and was wired to a claxon, it may
be desirable to temporarily defeat
the feature without changing wiring.
Default Assignments
The four available relays the Alarm
Package Option shall be assigned
with the following defaults as
follows:
Operation of the Relays:
If any of the four programmable
annunciation relays are assigned
with the given event or state, that
relay shall be energized when the
event or state is true and de-
energized when the event or state is
false pursuant to debounce or filter
timing that may be applied per the
details of a given assignment.
LLID Name
LLID Software
Relay Designation
Output Name Default
Operating Status
Programmable Relays
Relay 0 Status Relay 4, J2-1,2,3 Unit Limit Mode
Relay 1 Status Relay 3, J2-4,5,6 Maximum Capacity
Relay 2 Status Relay 2, J2-7,8,9 Compressor Running
Relay 3 Status Relay 1, J2-10,11,12 Alarm
Table 7 - Default settings
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