Remak VCS Installation And Operating Instructions Manual page 103

PLC Controller for Compressor Output Control
n P-17 Coolant: Used coolant type.
(0= R404A, 1=R22,2=R744, 3 = R290, 4 = R134A,
5 = R407C, 6 = R410A, 7 = R427A, 8 = R507A).
n P-32 PID HP Udz: PID control upper insensitive zone.
n P-33 PID HP Ldz: Control lower insensitive zone
n P-34 PID HP Bp: Control proportionality zone
n P-35 PID HP Ti: Control integration constant
n P-36 PID HP Td: Control derivative constant
n P-37 PID HP Arw: Control anti-reset lift
n P-38 PID HP Speed: Maximum number of PID output
changes per 1 sec.
n P-40 Bypass time LP: Low-pressure pressostat
bypass time upon compressor start.
n P-41 Filter time LP: Low-pressure pressostat bypass
time when the compressor is running.
n P-42 Bypass time LPA: Low-pressure sensor failure
bypass time upon compressor start.
n P-43 Filter time LPA: Low-pressure sensor bypass
time when the compressor is running.
P-45 Curb Enable: Output limitation enable from the
n
PID high-pressure controller.
P-47 Warning time (0 to 600 sec):
n
Time for which the output limitation is signalled.
P-50 PID Cond Bp: PID control proportionality zone.
n
P-51 PID Cond Ti: Control integration constant
n
P-52 PID Cond Td: Control derivative constant
n
P-53 PID Cond Udz: PID control upper insensitive
n
zone.
n P-54 PID Cond Ldz: PID control lower insensitive zone
n P-55 PID Cond Speed: Maximum number of PID
output changes per 1 sec.
n P-56 PID Cond Arw: Control anti-reset lift.
n P-48 Warning value (0 to 100%):
PID controller limiting value – when exceeded, the output
limitation is signalled.
n P-60 Increment time (10 to 600 sec):
Additional compressor connection time.
n P-61 Decrement time (0 to 120 sec):
Additional compressor switch-off delay time.
n P-66 Dif. through En.: Enables use of the differential
pressostat information for the cooling heat exchanger.
Anti-freeze protection. It starts defrosting.
n P-67 Swap time: Cooling/heating mode
switching time.
n P-68 Det time: Maximum defrosting time.
n P-69 Dit time: Defrosting interval.
n P-70 Switch OFF:
The compressor is switched off when switching
cooling/heating modes.
n P-71 Switch Cap.: (0 to 100%)
Compressor output between cooling/heating
mode switching.
n P-74 Defrost LP: (-10.0 to 2.5°C)
Evaporation pressure limit compared with S-00 below
when defrosting is enabled.
n P-77 Maf:
Number of cycles for the pressure oscillation mathematical
filter.
n P-79 App: Application selection.
Control units VCS
Application Version
One compressor with output
control, BASIC version
Two compressors, BASIC version
One compressor without output
control, PREMIUM version
Two compressors, PREMIUM version
Viewing Alarms
If a failure occurs during operation, this state is signalled by
a flashing symbol . Furthermore, the corresponding alarm
can be displayed. For a description, refer to point 5.2.
Alarm Types
Code Cause
LP sensor
A-01
failure
Td sensor
A-02
failure
HP sensor
A-03
failure
Compressor
A-04
1 failure 1
Compressor
A-05
2 failure
A-06 HP failure
A-07 LP failure
Control sig.
A-08
failure
Expanding
A-09
module failure
A-10 EEV failure
Condenser
A-11
failure
Settings
-1
- 2
1
2
Description
Check 4-20mA current loop.
Check the tempera-
ture sensor.
Check 4-20mA current loop.
Check the compres-
sor protections.
Check the compres-
sor protections.
Number of HP pressostat
failures exceeded.
Number of LP pressostat
failures exceeded.
Check 0-10V signal.
Expanding module
does not respond.
Expansion valve failure.
Check the condenser
circuit breaker.
101