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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;
-uC
Units conversion
0 = °C, K, bar;
This Parameter effects only the display. Internally the units are allways SI-
based.
HP-
Display mode
0 = No display
1 = Circuit 1
Parameters Circuit 1
1uE
Function
0 = Superheat control
1 = Economizer control (Only for R410A/R407C/R32)
1u4
Superheat control mode
0 = Standard control coil heat exchanger
1 = Slow control coil heat exchanger
2 = fixed PID
3 = fast control plate heat exchanger (not for 1uE = 1)
4 = Standard plate heat exchanger (not for 1uE = 1)
1u0
Refrigerant
0 = R22
1 = R134a
5 = R290*
6 = R448A
10 = R454B* 11 = R454C* 12 = R513A
15 = R1234yf *
*) EXN not permitted
*)
Warning -Flammable refrigerants: EXD-HP1/2 has a potential
ignition source and does not comply with ATEX requirements. Installation
only in non-explosive environment. For flammable refrigerants only use
valves and accessories approved for it!
1uP
Installed pressure sensor type
0 = PT5N-07...
1 = PT5N-18...
2 = PT5N-30...
3 = PT5N-10P-FLR
1uu
Start valve opening (%)
1u9
Start opening duration (second)
1uL
Low superheat alarm function
0 = disable (for flooded evaporator)
2 = enable manual reset
1u5
Superheat set-point (K)
If 1uL = 1 or 2 (enabled auto or manual reset)
If 1uL = 0 (disabled)
1u2
MOP function
0 = disable
1 = enable
1u3
MOP set-point (°C) saturation temperature
Factory setting according to selected refrigerant
(1u0). The default value can be changed
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
EXD-HP1/2 Controller with ModBus
communication capability
button
Factory
Min
Max
setting
0
1
0
100
0
1
0
100
Min
Max
1
1999
1
0
0
0
1 = Disabled
0
1 = F, psig
0
2 = Circuit 2 (only EXD-HP2)
0
0
0
2 = R410A
3 = R32
4 = R407C
7 = R449A
8 = R452A
9 = R454A*
13 = R452B* 14 = R1234ze*
0
10
1
0
1 = enable auto reset
3
0.5
0
see MOP table
www.climate.emerson.com/en-gb
Operating instruction
Code
1P9
Low pressure alarm mode circuit 1
0 = disabled
2 = enabled manual reset
1PA
Low pressure alarm cut-out circuit 1
1Pb
Low pressure alarm delay circuit 1
1Pd
Low pressure alarm cut-in circuit 1
Field
1P4
Freeze protection alarm function
setting
0 = disabled,
0
2 = enabled manual reset
1P2
Freeze alarm cut-out circuit 1
0
1P5
Freeze protection alarm delay, sec.
1P-
Superheat control circuit 1 fixed PID (Kp factor)
0
Display 1/10K
1i-
Superheat control circuit 1 fixed PID (Ti factor)
0
1d-
Superheat control circuit 1 fixed PID (Td factor)
Display 1/10K
1EC
Hotgas temperature sensor source
0 = ECP-P30
1 = Via Modbus input
1PE
Economizer control circuit 1 fixed PID
(Kp factor)
1iE
Economizer control circuit 1 fixed PID
(Ti factor)
1dE
Economizer control circuit 1 fixed PID
(Td factor)
Factory
High superheat alarm mode circuit 1
setting
1uH
0 = diabled
12
1uA
High superheat alarm setpoint circuit 1
127
1
1ud
High superheat alarm delay circuit 1
1
1
Positive correction of measured Hotgas
1
0
1E2
temperature.
1
0
Parameters Circuit 2 (only EXD-HP2)
1
0
Code
2u4
Superheat control mode
0 = Standard control coil heat exchanger
2
1
1 = Slow control coil heat exchanger
2 = fixed PID
3 = fast control plate heat exchanger
4 = Standard plate heat exchanger
2u0
System Refrigerant
1
1
0 = R22
5 = R290*
10 = R454B* 11 = R454C* 12 = R513A
4
0
15 = R1234yf *
*) EXN not permitted
*)
ignition source and does not comply with ATEX requirements. Installation
only in non-explosive environment. For flammable refrigerants only use
valves and accessories approved for it!
15
2
2uP
Installed pressure sensor type
(When DI2 is off)
0 = PT5N-07...
2 = PT5N-30...
2uu
Start valve opening (%)
2u9
Start opening duration (second)
2uL
Low superheat alarm function
0 = disable (for flooded evaporator)
2 = enable manual reset
2u5
Superheat set-point (K)
3
2
If 2uL = 1 or 2 (enabled auto or manual reset)
If 2uL = 0 (disabled)
2u2
MOP function
100
20
0 = disable
30
5
2u3
MOP set-point (°C) saturation temperature
2
1
Factory setting according to selected refrigerant
(2u0). The default value can be changed
Low pressure alarm mode circuit 2
2P9
0 = disabled
30
6
2 = enabled manual reset
30
6
2PA Low pressure alarm cut-out (bar) circuit 2
1
1
2Pb
Low pressure alarm delay (sec) circuit 2
2Pd
Low pressure alarm cut-in (bar) circuit 2
2P4
Freeze protection alarm function
0 = disable,
2 = enable manual reset
Parameter description and choices
1 = enabled auto-reset,
Display 1/10K
Display 1/10K
1 = enabled auto-reset
Parameter description and choices
1 = R134a
2 = R410A
6 = R448A
7 = R449A
Warning -Flammable refrigerants: EXD-HP1/2 has a potential
1 = PT5N-18...
3 = PT5N-10P-FLR
1 = enable
1 = enabled auto reset
1 = enable auto-reset,
EXD-HP12_OI_EN_DE_RU_1220_R06_865921.docx
Factory
Min
Max
setting
0
2
0
1 = enabled auto reset
-0.8
17.7
0
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
4
0
0
5
2
3 = R32
4 = R407C
8 = R452A
9 = R454A*
13 = R452B* 14 = R1234ze*
0
3
1
10
100
20
1
30
5
0
2
1
1 = enable auto reset
3
30
6
0.5
30
6
0
1
1
see MOP table
0
2
0
-0.8
17.7
0
5
199
5
0.5
18
0.5
0
2
0
Date: 17.12.2020
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