
Revision 2.2 Page 6 of 17
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
ML Twin Controller Installation Guide
-60.0 (-76.0) to +60.0 (140.0)
0 = Off
1 = Case Off
2 = Sec
-60.0 (-76.0) to +60.0 (140.0)
0 = Local
1 = Remote
2 = Manual Off
3 = Manual On
Parameter Description
The value above which the controller starts the Lead Compressor.
The value below the set point at which the controller stops the Lead Compressor.
The value above which the controller starts the Lag Compressor.
The value below the set point at which the controller stops the Lag Compressor.
Percentage of Probe 1 temperature that is used to calculate the control temp and display temp.
The remaining percentage will be used on probe 2 temperature.
Example, P-03 set to 30%
Control temp = 30% Probe 1 + 70% Probe 2
This parameter allows the user to change the function of input 3. See Monitor Probe
This parameter allows the user to change the function of input 4. See Monitor Probe
Sets the function of relay 2, defaults to Compressor
Sets the function of relay 4, defaults to Lights
Sets the function of relay 5, defaults to Trims
Sets an On percentage level, of a 5-minute period, to pulse the trim heater relay off/on.
Example: - P-11 set to 40% = 2 minutes On, 3 minutes Off
Time between compressor starts. See Anti-Short Cycle
Service interval time, set to 0 then back to reset. Brings on the service (Spanner) icon when active.
Sets the OT/UT alarm delay
Under temperature Alarm set point
Over temperature Alarm set point
Monitor probe Alarm delay
Sets the monitor probe OT/UT alarm delay
Monitor probe Under temperature Alarm set point
Monitor probe Over temperature Alarm set point
Sets the buzzer on duration when an alarm occurs. Set to 00:00 to not use the buzzer.
Defrost mode –
Local Mode : Controller schedules P-41 & P-42
Remote Mode : Front-end schedules.
Defrost Start Time (Local
mode)
Defrost start time for local schedule
Defrost number (Local
mode)
Number of defrosts per day (local mode)
Starts a defrost if no defrost command has been sent for this duration
Defrost Termination
Temperature
Defrosts terminate when the Air Off/Defrost Probe temp reaches this value (See P-04 & P-05).
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