Cableok? - Special Channel Function - Danfoss 140F1139 Installation And User Manual

Installation and User Guide
Setting MOn or MOf mode and mode parameters can be done by the following menu sequence:
EN: Main Screen – Enter to Main Menu – Channels settings – Channel #X – Manually
On/Of – { Enter – #X Manually On/Of Time – Down – Status On or Of – Down –
Manually On/Of Start or Stop }
EN: Main Screen – Enter to Main Menu – Channels settings – Channel #X – Manually
On/Of – { Enter – #X Manually On/Of Time – Down – Status On or Of – Down –
Manually On/Of Start or Stop }
Main screen with MOn mode data for one Channel is shown on the picture below (here
MOn started over 1S mode):
4.4.6 CableOK? – special channel function
CableOK? special function function can be used for checking the proper functioning
of the heating cable or other electrical equipment using a current flow control . In other
words, the current in the heater is controlled when the heating is turned on . Channel
Alarm appears as the result of state 'not OK' for this function (indication – symbol '!' in
Channel line on the Main Screen) .
For CableOK? function should be used additional device – for example Current Monitoring
Relay (CMR) or similar . CMR should be connected to the digital inputs DI1-DI7 corresponding
to Channel number . The main logic of CMR is the following – if current is not going through
device then 2 contacts/outputs are closed, and if current is going through device then 2
contacts/outputs are opened . This logic may also be in the opposite contacts' state .
NB: This function works the only when Channel has state 'Heating On'! In other words – if
heating is turned off ('Heating Of') cable or another heater does not consume any current and
accordingly there's nothing to control.
24
DEVIreg™ Multi
Data Heating status:
of base mode
The remaining
On or Of mode time (min.)
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