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Function

Description

Values

Code

Short name

MC Case shutdown

Master control signal used to shut down a case for a

time period. During shutdown there will be no alarm

monitoring

0=OFF, 1=ON

x17

--- Case shutdwn

MC Forced closing

Master control signal that will close the injection

valve

0=OFF, 1=ON

x07

--- Forced close

MC Forced cooling

Master control signal that will provide forced cooling

0=OFF, 1=ON

x08

--- Forced cool.

MC Defrost start

Master control signal for starting a defrost. At adap-

tive defrost the defrost might be skipped if the de-

frost is not needed

0=OFF, 1=ON

x13

--- MC def.start

MC Defrost state

Read out the actual state of the defrost

0=OFF, 1=ON

x14

--- DefrostState

MC Hold after de-

frost

Master control signal used for co-ordinated defrost

control to hold cabinets from returning to normal re-

frigeration after a defrost until all cabinets have termi-

nated defrost

0=OFF, 1=ON

x11

--- HoldAfterDef

MC Stop defrost

Master control signal used to prevent a defrost start

in a controller.

0=OFF, 1=ON

x12

--- Disable def.

MC Request next

defrost

Master control signal used by system manager to see

if a controller is requesting that the next defrost has

to be carried out

0=No, 1=Yes

x94

--- AD def.req.

MC Light signal

Master control signal for control of light via a data

communication signal from the system manager

0=OFF, 1=ON

o39

o39 Light remote

MC Actual dewpoint

Master control signal sending the actual measured

dewpoint from the system manager to the controller

over the network.

x03

--- Act.DewPoint

MC Tc temp. mean

Master control signal distributing the condensing

temperature signal to the case controllers that are us-

ing adaptive defrost. At transcritical CO2 sites the re-

ceiver pressure is distributed to the case controllers.

This function needs to be set up in the system man-

ager.

x04

--- TcTempMean

MC Po load factor

x83

--- Load factor

MC Bluetooth lock

Master control signal that will lock down all Bluetooth

data communication

0=OFF, 1=ON

aaa

--- BT lock

MC Min. delta T

Required minimum delta temperature across evapo-

rator (S3 - Te) in order to keep the air temperature at

the actual setpoint

y04

--- Min Delta T

Fault message

In an error situation the alarm LED on the front will be on and the alarm relay will be activated (depending on

priority). If you push the alarm button for 3 seconds you can see the alarm report in the display. (Alarm priorities can

be changed. See Table 40: Alarm relay priorities.) Here are the messages that may appear:

Table 48: Fault message

Code

Alarm text

Description

E01

Hardware failure

The controller has a hardware failure

E06

Clock lost time

Clock has lost valid time

E20

Pe Evap. pressure A - Sensor error