User guide

Revision 7.1b Page 24 of 31
Mercury Coldroom Panel Installation Guide
www.resourcedm.com
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
Modifying controller states
During normal operation you can change the following states from the function menu
Fans Only “FAnS”
Selecting the Fans Only option will put the controller into the Fans Only state if the current state is not Fans Only. If the current state is
Fans Only then the controller will change to the Normal state. Selecting this option will exit the setup menu automatically. The display will
show “FAnS OnLy”
If a remote display with key switch is being used, this function can be invoked by turning the key switch to the fans only position (90
degrees clockwise) with parameter P85 set to "fans"
Case Off “CASE”
Selecting the Case Off option will put the controller into the Case Off state if the current state is not Case Off. If the current state is Case
Off then the controller will change to the Normal state. Selecting this option will exit the setup menu automatically. The display will show
“CASE OFF”
If a remote display with key switch is being used, this function can be invoked by turning the key switch to the case-off position.
(Clockwise 90 degrees) with parameter P85 set to "case"
Lights Only “Ligt”
Selecting the Lights Only option will put the controller into the Lights Only state if the current state is not Lights Only. If the current state is
Lights Only then the controller will change to the Normal state. Selecting this option will exit the setup menu automatically. The display
will show “Ligt OnLy”
Note. When lights are being used in “Remote” mode with a timing channel: -
If the controller goes offline, the lights are turned ON after a delay of 5 minutes. The lights will stay on until the controller comes back on-
line where they will revert to the state of the timing channel being used.
Probe Offset
This feature allows each probe value to be modified by an “offset”. Offset values are from -10
O
C (-18
O
F) to +10
O
C (+18
O
F) and on a
channel basis. Example C1 = Probe 1.
Remote Commands:
The following commands can be used by a Data Builder program: -
Command
Value to send
Description
Conditions;
Setpoint Command
±10
O
C (±18
O
F)
Is added to or subtracted from the setpoint
Haccp Command
0
1
2
HACCP LED OFF
HACCP LED On
HACCP LED Flashes
Defrost Command
1
Initiates a defrost cycle
Defrost mode: remote
Defrost Command
3
Terminates the defrost
Defrost mode: remote
Defrost hold: On
Defrost min state complete
Case Off Command
0
5
Case runs normally
Case Off; all alarms are inhibited
EEV Command
2
1
Shuts the valve off
Restores the valve to normal operation
Use an “Analogue Out” block configured to the controller name and in the value field type in the command you require. Use a “Setting
block” as the input to the “Analogue Out” block to send the Value.
See Example to the right,
which sets the HACCP LED on: