Revision 2.1D
Page 10 of 14
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Mercury Switch User Guide
Warning
Please Note
The specifications of the product detailed on this
Set-Up Guide may change without notice. RDM
Ltd. shall not be liable for errors or for incidental
or consequential damages, directly and indirectly,
in connection with the furnishing, performance or
misuse of this product or document.
Ensure that all power is
switched off before
installing or maintaining
this product
Input/Output table
Number
IO
Range
Bar (Psi)
Units
I-01
Evap Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-02
Evap 1 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-03
Evap 2 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-04
Evap 3 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-05
Evap 4 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-06
Evap 5 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-07
Evap 6 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-08
Evap 7 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-09
Evap 8 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-10
Evap 9 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-11
Evap 10 Press
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-12
Humidity
0 to 100
rH
I-13
Sensor Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
I-14
Remote 1 Pressure
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-15
Remote 1 Pressure
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
I-16
Remote 1 Pressure
-3.4 to 180.0 (-49.3 to 2610)
Bar (Psi)
O-01
Evap Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-02
Evap 1 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-03
Evap 2 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-04
Evap 3 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-05
Evap 4 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-06
Evap 5 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-07
Evap 6 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-08
Evap 7 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-09
Evap 8 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-10
Evap 9 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-11
Evap 10 Temp
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-21
MOP
Off ( 0 ) or On (1)
O-31
Trim Level
0 to 100 %
%
O-32
Remote Trim
Off ( 0 ) or On (1)
O-33
Remote 1 Temperature
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-34
Remote 2 Temperature
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
O-35
Remote 3 Temperature
-49.0 to 60 (-56.2 to 140.0)
o
C (
o
F)
EEV Control Operation
Product PR0018-PHI is intended for EEV control on an Island by island basis and can be implemented in two ways.
1.
Using the on board 4-20mA Input to measure the suction pressure going to the island.
2.
Using a remote suction pressure sent from Mercury Plant Controller (PR0600-PACK) on the same IP network. Note this remote
pressure can be shared by more than one Mercury Switch.
On board 4-20mA Suction Pressure Input Control Application
Ensure parameter P-57 is set to
“Local”.
Configure the remaining parameters.
Connect the suction pressure transducer for the Island to the 4-20mA input on the Mercury Switch.
Ensure the transducer is correctly connected and the mA input selector jumper is in the Pressure position.
Ensure each Mercury case controller has been configured to accept the calculated remote evaporator temperature. See
Mercury user guide for further details.
Remote Suction Pressure Application
Ensure parameter P-57, Evaporator Type, is set to Remote 1 or Remote 2 or Remote 3.
Set parameter P-56, Broadcast ID, to match the ID of the desired Plant Pack Controller.
Configure the remaining parameters.
Configure the desired Plant Pack controller to broadcast the Suction pressure. See RDM Plant Controller PR0600 for further
information on how to broadcast pressure.
Note
If the Plant Controller being read from is set to Bar then the Mercury Switch has to be set for Bar (Type 1 or 3)
If the Controller being read from is set to PSI then the Mercury Switch has to be set for PSI (Type 2 or 4).
To disable local transducer
To disable the local pressure input if it is not being used and stop it alarming transducer fault.
Set P-02 (Span) = 0. This only applies to software version 2.1 or higher.
