Grundfos DMX Series, Installation And Operating Instructions Manual

Page: 27 / 40

27 V3.0
DMX model 227
7.3.1 Relay Outputs
NOTE The relay output connection depends on the application
and the connected actuators.
Interference suppression is required for inductive loads (also relays and contactors).
If this is not possible, protect the relay contacts using a suppressor circuit as
described below.
❏
With AC voltage:
Current up to Capacitor C Resistor R
60 mA 10 nF 275 V 390
Ω
2 W
70 mA 47 nF 275 V 22
Ω
2 W
150 mA 100 nF 275 V 47
Ω
2 W
1.0 A 220 nF 275 V 47
Ω
2 W
❏
With DC voltage: connect freewheeling diode parallel to relay or contactor.
CAUTION Provide relay outputs on site with an appropriate
backup fuse!
NOTE These connections depend on the type of actuator
used, and should only be understood as guidelines.
➜
Refer to actuator documentation.
1
K1
L
1
K2
N
1
K3
PE
1
K4
PE
1
K5
N
1
K6
1
K7 K8 K9 K10
1
1 1
S1
green yellow white
230 V AC /
115 V AC
contakt 1
(non-floating
230 V AC / 115 V AC)
contakt 2 (floating) sensor
1
1 1
S2
R
C
+
-