Emerson EXD-HP1 Betriebsanleitung Seite 4

Code Parameter description and choices
2Pd Low pressure alarm cut-in (bar) circuit 2
2P4 Freeze protection alarm function
0 = disable,
1 = enable auto-reset,
2 = enable manual reset
2P2 Freeze alarm cut-out circuit2
2P5 Freeze protection alarm delay, sec.
2P- Superheat control circuit2
(Kp factor), fixed PID
Display 1/10K
2i- Superheat control circuit2 (Ti factor),
fixed PID
2d- Superheat control circuit2 (Td factor),
fixed PID
Display 1/10K
2uH High superheat alarm mode circuit 2
2uA High superheat alarm setpoint (K) circuit 2
2ud High superheat alarm delay (Min) circuit 2
C o n t r o l ( v a l v e ) s t a r t - u p b e h a v i o r :
(Parameter 1uu/2uu and 1u9/2u9)
1uu/2uu:
Min.: 10% (<1 sec.)
Default: 20% (< 1.5 sec.)
Max.: 100% (< 6 sec.)
E r r o r / A l a r m h a n d l i n g
Alarm
Description
code
Pressure sensor 1/2 error
1E0/2E0
Temperature sensor 1/2 error
1E1/2E0
Discharge hot gas
1Ed
temperature sensor 3 error
EXM/EXL electrical
1AΠ/2AΠ
connection error
Discharge hot gas
1Ad
temperature above limit
AF
Freeze protection
AF blinking
AL
Low superheat
(<0,5K)
AL blinking
AH High superheat
AP
Low pressure
AP blinking
Failed
Err
uploading/downloading
Note: When multiple alarms occur, the highest priority alarm is displayed until being cleared, then the next highest alarm is displayed until all alarms are cleared. Only then will
parameters be shown again.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Operating instruction
EXD-HP1/2 Controller with ModBus
communication capability
Min Max
0.5 18
0 2
-20 5
5 199
0.1 10
1 350
0.1 30
0 1
16 40
1 15
Related Alarm
Valve
parameter relay
- Triggered Fully close Check wiring connection and measure the signal 4 to 20 mA
- Triggered Fully close Check wiring connection and measure the resistance of sensor
- Triggered Operating Check wiring connection and measure the resistance of sensor
- Triggered -
Triggered Operating
1P4/2P4: 1 Triggered Fully close Check the system for cause of low pressure such as insufficient
1P4/2P4: 2 Triggered Fully close
1uL/2uL: 1 Triggered Fully close
1uL/2uL: 2 Triggered Fully close
1uH/2uH: 1 Triggered Operating Check the system
1P9/2P9: 1 Triggered Operating Check the system for cause of low pressure such as refrigerant
1P9/2P9: 2 Triggered Operating
- - -
www.emersonclimate.eu
U p l o a d / d o w n l o a d K e y : F u n c t i o n
Factory • For serial production of systems/units, upload/download key allows the
setting
transmission of configured parameters among range of identical systems.
0.5
U p l o a d i n g p r o c e d u r e :
0
(storing configured parameters in key)
• Insert the key while the first (reference) controller is ON and press
the "uPL" message appears followed by "End" message for 5 seconds.
0 • Note: If the "Err" message is displayed for failed programming, repeat the above
30 procedure.
1.0
D o w n l o a d i n g p r o c e d u r e :
(configured parameters from key to other controllers)
• Turn off power to new controller
100
• Insert a loaded Key (with stored data from reference controller) into new controller
and turn on the power supply.
3.0
• The stored parameters of the key will be downloaded automatically into the new
controller memory; The "doL" message appears followed by a "End" message for
5 seconds.
0
• The new controller with new loaded parameters setting will start to operate after
30
"End" message disappears.
3
• Remove the key.
• Note: If the "Err" message is displayed for failed programming, repeat the above
procedure.
What to do?
Check wiring connection and measure the resistance of winding
Check valve opening/ check liquid flow for flash gas free/check
discharge hot gas temperature sensor
load on evaporator
Check wiring connection and operation of valve
loss
Repeat again the procedure for uploading/downloading
Date: 08.09.2017
Requires manual reset
after resolving alarm
No
No
No
No
No
No
Yes
No
Yes
No
No
Yes
No
EXD-HP12_OI_ML_R03_865921.docx
button;