C o n t r o l l e r 1 ( C o m p r e s s o r c o n t r o l l e r ) :
/
DISPLAY PARAMETERS
/1
Value to be shown on display
0 = compressors and fans states (controller 1 and 2)
1 = suction pressure (bar)
2 = saturation temperature from suction pressure (°C)
3 = condensing pressure (bar)
4 = saturation temperature from condensing pressure (°C)
5 = Digital Scroll capacity (%)
6 = fan speed (%)
7 = Digital Scroll discharge temperature (°C)
P
SET-POINT PARAMETERS - C1
P0
Pressure set-point (suction) for
compressor circuit
P1
Pressure band (control band for P/PI,
dead band for dead band control mode)
P3
Fast recovery from low pressure
P8
High discharge pressure recovery
t
TIME PARAMETERS
(1)
Time delay before adding capacity
t1
(1)
Time delay before removing capacity
t2
(1)
Compressor minimum on time
t3
(1)
Compressor minimum off time
t4
t5
Maximum compressor switching
A
ALARM PARAMETERS - C1
A2
Minimum suction pressure alarm
limit
A3
Maximum suction pressure alarm
limit
(1)
Delay time for minimum pressure
A4
alarm limit
(1)
Delay time for maximum pressure
A5
alarm limit
A6
High discharge temperature cut-out
cut-in = cut-out – 10°C
(1)
Compressor serial alarm delay
A8
(2)
Compressor run limit
A9
u
STEP ENABLE PARAMETERS - C1
u0
Reset operating time
0 = do nothing
1 = reset operating time compressor 1
2 = reset operating time compressor 2
3 = reset operating time all compressors
u1
Enable/disable compressor 1
u2
Enable/disable compressor 2
c
APPLICATION PARAMETERS - C1
c1
Number of compressors
c4
Compressor 1 control mode
0 = compressor 1 in standard control loop
1 = compressor 1 act as base load compressor
2 = compressor 1 is a digital scroll compressor & base load
c5
Compressor switch logic
0 = FILO logic (First In, Last Out)
Capacity demand: Adds first compressor out of available compressors.
(= compressors where min off time (t4) is fulfilled)
Capacity excess: Removes last compressor out of available compressors.
(= compressors where min on time (t3) is fulfilled)
1 = Rotation enabled
Capacity demand: Adds compressor with lowest runtime out of available
compressors. (= where min off time (t4) is fulfilled)
Capacity excess: Removes compressor with highest runtimes out of
available compressors. (= where min on time (t3) is fulfilled)
c6
Number of compressors to switch on
in case of sensor failure
F
MODULATING PARAMETERS - C1
F2
Minimum output value
F3
Maximum output value
F6
PWM rate (Digital scroll)
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Operating instruction
EC2-552 Condensing Unit Controller
Min Max
Unit
Def
Individ.
0
7
-
0
-1.0
50
bar
3.0
0.0
50
bar
2.0
-9.9
50
bar
-9.9
-9.9
50
bar
50
0
99
10sec
3
0
99
10sec
3
0
99
10sec
6
0
99
10sec
6
0
199
1/hr
0
-1.0
50
bar
1.0
-1.0
50
bar
6.0
0
99
10sec
0
0
99
10sec
0
100
140
°C
130
0
99
10sec
0
0
99
0
10 000hr
0
3
-
0
0
1
flag
1
0
1
flag
1
1
2
-
2
0
2
-
2
0
1
flag
0
0
2
-
0
10
100
%
20
10
100
%
100
10
20
sec
20
www.emersonclimate.eu
r
SENSOR PARAMETERS - C1
r0
Suction pressure sensor minimum
value
r1
Suction pressure sensor maximum
value
r2
Pressure offset for suction pressure
r3
Refrigerant type
0 = no temperature conversion;
1 = R22,
2 = R134a,
6 = R407A 7 = R407F,
11 = R450A, 12 = R513A, 13 = R452A
C o n t r o l l e r 2 ( F a n c o n t r o l l e r )
P
SET-POINT PARAMETERS - C2
P0
Pressure set-point (condensing) for
fan circuit
P1
Pressure band (control band for
P/PI, dead band for dead band
control mode)
A
ALARM PARAMETERS - C2
A2
Minimum condensing pressure
alarm limit
A3
Maximum condensing pressure
alarm limit
(1)
Delay time for minimum pressure
A4
alarm limit
(1)
Delay time for maximum pressure
A5
alarm limit
(2)
Fan run limit
A9
u
STEP ENABLE PARAMETERS - C2
u0
Reset operating time
0 = do nothing
1 = reset operating time fan 1
u1
Enable/disable fan 1
c
APPLICATION PARAMETERS - C2
c2
Fan controller operation
0 = disabled
1 = enabled
c6
Fan behaviour on in case of sensor
failure
0 = Analog output 0% (0 V)
1 = Analog output 100% (10 V)
F
MODULATING PARAMETERS - C2
F2
Minimum output value
F3
Maximum output value
r
SENSOR PARAMETERS - C2
r0
Condensing pressure sensor
minimum value
r1
Condensing pressure sensor
maximum value
r2
Pressure offset for condensing
pressure
H
OTHER PARAMETERS
H2
Keyboard and IR remote control
0 = all disabled
(Caution, access to controller only via network possible)
1 = Keyboard enabled
2 = IR remote control enabled
3 = Keyboard and IR remote control enabled
H3
IR remote control access code
H5
Password
(1)
Shown value x 10 = Time in seconds. Ex. a value of 2 means 20 seconds.
(2)
Shown value x 10 000 = Time in hours. Ex. a value of 2 means 20.000 hours.
Date: 02.05.2017
Min Max
Unit
-1.0
50
bar
-1.0
50
bar
-1.0
1.0
bar
0
13
-
3 = R507,
4 = R404A, 5 = R407C,
8 = R410A, 9 = R448A, 10 = R449A,
Min
Max
Unit
-1.0
50
bar
0.0
50
bar
-1.0
50
bar
-1.0
50
bar
0
99
10sec
0
99
10sec
0
99
10kHr
0
1
-
0
1
flag
0
1
-
0
1
-
0
100
%
0
100
%
-1.0
50
bar
-1.0
50
bar
-1.0
1.0
bar
0
3
-
0
199
-
0
199
-
EC2-552_OI_ML_R08_864923.docx
Def
Individ.
-0.8
7.0
0.0
4
Def
Individ.
14.0
4.0
10.0
27
0
0
0
0
1
1
0
0
100
0.0
30
0.0
3
0
12