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Available languages
Available languages
Manual alarm reset/clearing functional alarms (except hardware errors):
Press
and
together for 5 seconds. When the clearing is done, "CL"
message appears for 2 seconds.
M a n u a l m o d e o p e r a t i o n
Press
and
together for 5 seconds to access to manual mode operation.
List of parameters in scrolling sequence by pressing
Code
Parameter description and choices
1Ho
Manual mode operation; circuit 1
0 = off;
1 = on
1HP
Valve opening (%)
2Ho
Manual mode operation; circuit 2
0 = off
1 = on
2HP
Valve opening (%)
Note: During manual operation, functional alarms such as low superheat are
disabled. It is recommended to monitor the system operation when the controller
is operated manually. Manual operation is intended for service or temporary
operation of valve at a specific condition. After achieving the required operation,
set the parameter 1Ho and 2Ho at 0 so the controller automatically operates the
valve(s) according to its setpoint(s).
L i s t o f p a r a m e t e r s i n s c r o l l i n g s e q u e n c e b y p r e s s i n g
b u t t o n :
Code
Parameter description and choices
H5
Password
Adr
ModBus address
br
Modbus baudrate
PAr
Modbus parity
-C2
Circuit 2 of EXD-HP2 enabled
0 = Enabled;
1 = Disabled
-uC
Units conversion
0 = °C, K, bar;
This Parameter effects only the display. Internally the units are allways SI-
based.
HP-
Display mode
EXD-HP1= 0 (not to display: - - -); 1(display)
EXD-HP2= 0 (not to display: - - -); 1 (circuit 1); 2 (circuit2)
Parameters Circuit 1
1uE
Function
0 = Superheat control (for 6 refrigerants);
1 = Economizer control (Only for R410A/R407C/R32)
1u4
Superheat control mode
0 = Standard;
1u0
Refrigerant
0 = R22;
3 = R32
5 = R290
1uP
Installed pressure sensor type
0 = PT5-07...
1 = PT5/6-18...
1uu
Start valve opening (%)
1u9
Start opening duration (second)
1uL
Low superheat alarm function
0 = disable (for flooded evaporator)
1 = enable auto reset
1u5
Superheat set-point (K)
If 1uL enabled (auto or manual)
If 1uL disabled
1u2
MOP function
0 = disable
1 = enable
1u3
MOP set-point (°C) saturation temperature
**): Factory setting according to selected refrigerant (u0):
+13°C for R22
*) Min./Max. settings dependent on selected type of refrigerant
1P9
Low pressure alarm mode circuit1
0 = disabled
1 = enabled auto reset
2 = enabled manual reset
1PA
Low pressure alarm cut-out circuit1
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
EXD-HP1/2 Controller with ModBus
communication capability
button
Min
Max
0
1
0
100
0
1
0
100
Min
1
1
0
0
0
0
1 = F, psig
0
0
0
1 = Slow
2 = fixed PID
0
1 = R134a;
2 = R410A;
4 = R407C;
0
2 = PT5-30...
10
1
0
2 = enable manual reset
3
0.5
0
*
+15°C for R134/R407C/R410A/R32/R290
0
-0.8
www.emersonclimate.eu
Operating instruction
Code
1Pb
1Pd
1P4
Factory
Field
1P2
setting
setting
1P5
0
1P-
0
1i-
0
1d-
0
1EC
1PE
1iE
1dE
1uH
1uA
Factory
1ud
Max
setting
1E2
1999
12
127
1
1
1
Parameters Circuit 2 (only EXD-HP2)
1
0
Code
1
0
2u4
1
0
2u0
2
1
2uP
1
1
2
0
2uu
5
2
2u9
2uL
2
2
2u5
100
20
30
5
2
1
2u2
2u3
30
6
30
6
1
1
*
**
2P9
2PA
2
0
2Pb
17.7
0
Date: 08.09.2017
Parameter description and choices
Low pressure alarm delay circuit1
Low pressure alarm cut-in circuit1
Freeze protection alarm function
0 = disabled,
1 = enabled auto-reset,
2 = enabled manual reset
Freeze alarm cut-out circuit1
Freeze protection alarm delay, sec.
Superheat control circuit1 (Kp factor)
Display 1/10K
Superheat control circuit1 (Ti factor)
Superheat control circuit1 (Td factor)
Display 1/10K
Hotgas temperature sensor source
0 = ECP-P30
1 = Via Modbus input
Economizer control circuit1 (Kp factor)
Display 1/10K
Economizer control circuit1 (Ti factor)
Economizer control circuit1 (Td factor)
Display 1/10K
High superheat alarm mode circuit 1
High superheat alarm setpoint circuit 1
High superheat alarm delay circuit 1
Positive correction of measured Hotgas
temperature.
Parameter description and choices
Superheat control mode
0 = Standard;
1 = Slow;
2 = Fix PID
(For trouble shooting/no warranty if system to be operated with fix PID)
System Refrigerant
0 = R22;
1 = R134a;
3 = R32
4 = R407C;
5 = R290 (only with EXM/ EXL)
Installed pressure sensor type
(When DI2 is off)
0 = PT5-07...
1 = PT5/6-18...
2 = PT5-30...
Start valve opening (%)
Start opening duration (second)
Low superheat alarm function
0 = disable (for flooded evaporator)
1 = enable auto reset
2 = enable manual reset
Superheat set-point (K)
If 2uL enabled (auto or manual)
If 2uL disabled
MOP function
0 = disable
1 = enable
MOP set-point (°C) saturation temperature
**): Factory setting according to selected refrigerant (2u0):
+13°C for R22
+15°C for R134a/R407C/R410A/R32/R290
*) Min./Max. settings dependent on selected type of refrigerant
Low pressure alarm mode circuit 2
0 = disabled
1 = enabled auto reset
2 = enabled manual reset
Low pressure alarm cut-out (bar) circuit 2
Low pressure alarm delay (sec) circuit 2
EXD-HP12_OI_ML_R03_865921.docx
Factory
Min
Max
setting
5
199
5
0.5
18
0.5
0
2
0
-20
5
0
5
199
30
0.1
10
1.0
1
350
100
0.1
30
3.0
0
1
0
0.1
10
2.0
1
350
100
0.1
30
1.0
0
1
0
16
40
30
1
15
3
0
10
0
Factory
Min
Max
setting
0
2
0
0
5
2
2 = R410A;
0
3
1
10
100
20
1
30
5
0
2
1
3
30
6
0.5
30
6
0
1
1
*
*
**
0
2
0
-0.8
17.7
0
5
199
5
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