Document Part # 026-4600 Rev 3 23-APR-2008 Page 8 of 8
©2007 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
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Control Link RSC Installation Instructions
technical bulletin
Restore to Defaults
The blue button located on the top of the Control Link main module (see Figure 10) may be used to
restore the Control Link RSC to its “default setpoints,” which can be either the RSC’s factory default
setpoints (as shown in the “Default” columns of the General and Advanced Parameters) or a cus-
tomer-specific set of defaults programmed using the Control Link PC tool. Do NOT
press the
Restore to Defaults button unless you are sure what default values will be restored.
To perform a restore, press and hold this button for 15 seconds. The display will flicker briefly to
indicate the command to reset was received. Power down the Control Link, wait 5 seconds, and
restore power.
Alarms
There are ten different alarms that may occur in a CL-RSC. When an alarm is detected, CL-RSC takes the following actions:
• Displays a four-character error code on the LED display (unless parameter “Add” is set to “yES”
• Closes the Aux relay (if parameter “ArA” is set to “ALAr”)
• Uses fail-safe modes and settings to compensate for the alarm condition and attempt to keep the system running until repair can be done.
Clearing Alarms
To clear an alarm and cause the CL-RSC to resume normal operation, press the Alarm Silence button. The alarm message will disap-
pear, the Aux relay will open (if parameter “ArA” is set to “ALAr”), and the CL-RSC will attempt to resume normal operation. If the
condition or conditions that caused the alarm are still present, the alarm will reoccur after the appropriate alarm delays have elapsed.
ArA
For the expansion board, sets the function of the auxiliary relay. ALAr =close on alarm, LCOn = lighting control.
Visible only if
rYbd=yES.
ALAr LCOn ALAr
LIOn LIOF
.
.
L6On L6Of
Visible only if ArA=LCon or r2Fn=LCon. There are six ON/OFF pairs where you may specify times of day for
turning the lighting control relay ON and OFF. Enter the first ON time of the day in the
L1On field and the first
OFF time in the
L1OF field. If necessary, continue entering ON/OFF times in the L2On / L2Of fields, then
L3On / L3Of, etc. Leave all unused schedule time pairs set to 0:00 to disable them.
0:00 23:59 0:00
LOC
General parameter password enable. If yES, user must enter password to change general parameters.
no yES no
PASS
Password for general programming. If 0000, no password is required.
0000 9999 0000
APAS
Password for advanced programming.
0000 9999 0000
rbtp
Relay board type. 0-St for the “standard” (618-2085) board, 1-gp for the “general purpose” (618-1120) board.
0-St 1-gp 0-st
Alarm Codes
Code Description
tS1O ts20 ts30
Open sensor alarm for sensor #1 (case temp), sensor #2 (defr. term), or sensor #3. When tS1O is active, CL-RSC uses CSFP and CSFO to pulse the
compressor ON and OFF as a fail-safe. When
ts20 is active, defrosts will not terminate by temperature and will last the full duration (dEFd).
tS1S ts2s ts3s
Short sensor alarm for sensor #1 (case temp), sensor #2 (defr. term), or sensor #3. When tS1S is active, CL-RSC uses CSFP and CSFO to pulse the
compressor ON and OFF as a fail-safe. When
ts2s is active, defrosts will not terminate by temperature and will last the full duration (dEFd).
HtP
High temperature alarm setpoint was reached after the Adtd(def. delay) or AdEL (normal delay) elapsed. No fail-safe actions.
LtP
Low temperature alarm setpoint was reached after the Adtd(defrost delay) or AdEL (normal delay) elapsed. No fail-safe actions.
dtt
The case temperature did not reach the defrost termination temperature setpont (dEFt) before the defrost cycle time finished. No fail-safe actions.
rLy
Compressor fault detected.
Advanced Parameters
Code Description Min Max
Default
CONTROL LINK
(FRONT VIEW)
SETPOINT RESET BUTTON
(PRESS & HOLD 15 SECONDS)
Figure 10 - Reset Button
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