ECKELMANN UA 400 - Door Contact

Firmware V3.15
21.04.2021
65/401
5.9 Door contact
Controller types UR 141 NK (NT) and UR 141 TK (LT) only
With coldrooms, one or two 230 V AC digital inputs (terminals D21/D22 and D31/32, factory setting) can each
be allocated as a cold-room door contact. Cooling and the evaporator fan are switched off when the cold-room
door is opened.
In the event of a permanently open door, an alarm is activated and the controller returns to cooling following the
elapse of the adjustable alarm delay time.
Conditions for switch-off
If the high temperature alarm setpoint (on cold-room sensor) is exceeded or if maximum door open time
expires, cooling and the evaporator fan will be restarted before the door closes. High cold-room air temperature
(high temperature alarm) also inhibits switch-off.
If the controller is operated with two zones and only the first 230 V digital input (Door Contact 1) is configured
for cold-room door monitoring, the door contact switch will stop cooling and the evaporator fan in both zones.
The same applies when only the second 230 V digital input is configured on Door Contact 2.
In single-zone operation the door contacts always act on first zone control. The only exception is when both
230Vdigitalinputsaresettodoorcontactfunction,inwhichinstanceDoorContact1aloneactsoncontroland
Door Contact 2 has no function.
Warning - hazardous electrical voltage! Danger of electric shock! BEFOREconnectingand
disconnectingitmustbecheckedthatthe230VACdigitalinputsareoff load! The controller and
connected voltage carrying components remain supplied with power!
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Door Contact 1 can be activated via the digital input 3 (terminal D31/32). This requires Digital Input 3 to
besetasDOOR CONTACT(Menu6-2-4)forthedoorcontacttobeavailable.DoorContact2canbe
activatedviaDigitalInput2(terminalsD21/D22).ThisrequiresInput3tobesetasDOOR
CONTACTforthedoorcontacttobeavailable.Thefunctionofthetwodigitalinputscanbeconfigured
viatheparameterInv. D2(i.e.Inv. D3) in menu 6-2-4. If the alarm delay is set to 0 minutes then the
cooling and the evaporator fan are not switched off and the alarm is immediately discharged.
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No archiving takes place in the internal archive memory for the second door contact.
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