Malfunction due to interference sources! All supply lines from and to the case controller must be
shielded (cable type: LiYCY)! If sensor cables are exclusively laid within the refrigerated case to be
monitored and sources of interference (e.g. parallel power lines) are not anticipated, then it is
possible to dispense with shielding. As a general rule, care should be taken to ensure that signal
cables and cables carrying mains voltage are routed in separate cable channels
Connection of pressure transmitters / humidity sensors (analogue input 2 only)
Controller type Terminal No. Analogue input AIN1 Analogue input AIN2
SPIR410
SPIR290
11* +24 V DC +24 V DC
12* AIN1 (4..20 mA)
ND (to)
–
13* GND GND
14* – AIN2 (4..20 mA)
HD (tc)
* The analogue inputs are not available for UA 413 S!
7.10 Terminal assignment of the analogue inputs for temperature sensors
Warning about dangerous electrical voltage! If mains power is connected to the analogue inputs, this
results in destruction of the controller!
Malfunction due to interference! All supply lines from and to the case controller must be shielded
(cable type: LiYCY)! If sensor cables are exclusively laid within the refrigerated case to be monitored
and sources of interference (e.g. parallel power lines) are not anticipated, then it is possible to
dispense with shielding. As a general rule, care should be taken to ensure that signal cables and
cables carrying mains voltage are routed in separate cable channels The analogue inputs of the case
controller are approved for the connection of the temperature sensors specified in chapter only
. Selection of the sensor type, page 19
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