Installation 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
Revision 2.7 Page 17 of 83
Mercury Plant Controller Installation Guide
P120
P131
Section 1 Stage 1 Size
Section 1 Stage 12 Size
0.0 – 60.0
0.1
-
0.0
P140
P151
Section 2 Stage 1
Section 2 Stage 12
(0) None,
(1) Unused,
(2) Compressor,
(3) Loader,
(4) Fan
(5) Inverter
(6) Trim
(7) Comp Run
1
-
0
P160
P171
Section 2 Stage 1 Size
Section 2 Stage 12 Size
0.0 – 60.0
0.1
-
0.0
dFLt
Restore Default settings
(Front panel Only)
ESc
* Span and Offset allows for the full range of the transducer to be used by the controller.
Span is the full range of the transducer
Offset is the value below zero.
Note. The controller uses absolute pressure; if guage pressure is required, add +1 Bar to the offset value.
Example: Danfoss AKS 33 with range: -1 bar to 12 bar
Span would be 190 (13 bar)
Offset would be -15 (-1 bar)
**Run smallest=on: - When all compressors are off (because the target pressure has been satisfied) the controller,
when the pressure rises, will always turn on the smallest compressor after the variable output has reached 100%. If
the ASC timer is running for the smallest compressor, the controller will NOT bring on any other available
compressors, the variable output will remain at 100% and the controller will wait until the ASC timer has elapsed
and then turn on the smallest. Please note that this is true for any pressure condition.