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11.1.1 Safety chain
Connect safety chain on the terminals marked 1 and 2 on the 15-pole plug.
Use potential-free contact.
11.1.2 Status Message Operation - Error
There are two signal outputs via PhotoMOS relay.
Fig. 17 - PhotoMOS Relais
Tab. 11-2 - Status messages operation / error
20
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Fig. 16 - Safety chain
The input of the safety chain must always be connected to safety devices
with an NC contact.
A cable bridge is always wired at the factory between connections 1-2 /
safety chain.
The humidifier does NOT work otherwise.
If several humidifiers are connected to the safety chain, this must be
isolated and connected to each humidifier with separate switching
contacts.
Status message
1
Operational message
2
Collective error message
U
: 24 V-DC
max
I
: 50 mA
max
: 25 Ω
R
on max
Message type
Connection terminal on 15-pole plug
[MBA_UB-1...4-CT_3.1_EN] Rev.: 02/2022 Translation of the original instructions
B1: limit hygrostat
B2: flow monitor
B3: fan locking
B4: conductivity measurement
B5: ON/OFF switch
5 + 6
3 + 4
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