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Characteristic of 0-10 V interface
1
max
1
min
0
0
2
4
Fig. 3.2 Characteristic of 0-10 V interface with flow
temperature setpoint
Key
1
The maximum and minimum flow temperatures de-
pend on the settings on the boiler.
Installation instructions 0-10 V --> eBUS Interface VR 34 0020017083_03
6
8
10
12
Input voltage [V]
upward
downward
Description of the equipment 3
The module converts the voltage setpoint on
terminal "I" from an external controller into a
setpoint signal for the boiler. It can signal an
error from the boiler on terminal "F". The
error signal persists until the error has been
removed and the boiler has been reset.
A 24 V relay drawing a maximum current of
30 mA can be connected between the "F" ter-
minal and "24 V".
Note
h
The chassis terminal is at earth po-
tential.
3.4
Scope of delivery
• Check the scope of delivery for the
VR 34 0-10 V --> eBus interface:
– 1 VR 34 0-10 V --> eBus interface
– 1 eBUS connecting cable
– 1 cable bushing
– 1 plug X1 with wire jumper
GB
7
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