Roth BW/H Komfort, Installation Manual, Page: 41 / 172

BW/H Komfort
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1.2.3 Actuators
The controller is totally equipped with 9 relays, to which
the consumer (actuators), e. g. pumps, valves, mixer and
auxiliary relays can be connected:
•
The relays R1...R4 are semi-conductor relays, also
suited for pump speed control.
R1-A ... R4-A = normally open R1 ... R4
N = neutral conductor
(collective terminal strip)
PE = protective earth conductor
(collective terminal strip)
•
The relays R5 ... R8
are electromagnetic
relays with change-over contact.
R5-A ... R8-A = normally open R5 ... R8
R5-R ... R8-R = break contact R5 ... R8
N = neutral conductor
(collective terminal strip)
PE = protective earth conductor
(collective terminal strip)
• The relay R9 ist ein potenzialfreies
Relais mit Wechselkontakt:
R9-M = center contactR9
R9-A = normally open R9
R9-R = break contact R9
1.2.4 Bus
The controller is equipped with two bus interfaces for data
transfer:
1.) The VBus
®
for data transfer with and energy supply of
external modules. The connection is effected at the two
terminals marked „
VBus
®
“ (any polarity). One or more
VBus
®
modules can be connected by this Data-Bus:
• WMZ-M1, calorimeter module
• large displays
RS232-Connection
RJ45-jack
VBus
screw terminals
Please note:
the relays R1 up to R4 are de-
signed as semiconductor relays
for pump speed control. A mi-
nimum load of 20 W (power
consumption of the consumer)
is required for faultless function.
The enclosed condenser must
be paralleley connected to the
respective relay output for con-
nection of auxiliary relays, motor
valves, etc.
Attention:
The minimum pump speed must
be set to 100% for connecting of
auxiliary relays or valves.
L
N
PE
Netz / Mains
220 … 240 V
B