Product Overview

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Siemens Building Technologies Electro-hydraulic actuators for valves CM1N4564E
HVAC Products 13.02.2009
Connection diagrams
SKB32.51 SKB32.50
(Y1)
(Y2)
3250G01
N1
L
N
Y1 Y2
100 %
0 %
N
21
F1
Y1
AC 230 V
(L)
(N)
3250G05
L
N
Y1 Y2
100 %
0 %
N
Y2
N2
AC 230 V
(Y1)
(Y2)
(L)
(N)
F1 temperature limiter
N1, N2
controller
Y1, Y2 actuators
L Phase
N neutral
Y1 Positioning signal «open»
Y2 Positioning signal «close»
21 Spring-return function
SKB82.51, SKB82.51U SKB82.50, SKB82.50U
3250G03
N1
G0 (SN)
G (SP)
Y1 Y2
100 %
0 %
G
21
Y1
AC 24 V
(Y1) (Y2) (G0)
(G)
F1
3250G02
G0 (SN)
G (SP)
Y1
Y2
100 %
0 %
G
Y2
(Y1) (Y2)
N2
AC 24 V
(G)
(G0)
F1 temperature limiter
N1, N2
controller
Y1, Y2 actuators
SP Systempotential AC 24 V
SN System neutral
Y1 Positioning signal «open»
Y2 Positioning signal «close»
21 Spring-return function
Y1 actuator
N1 controller
F1 temperature limiter
F2 frost protection thermostat
terminals: 1 – 3 frost hazard / sensor is interrupted
(thermostat closes with frost)
1 – 2 normal operation
F3 frost protection monitor QAF21.. or QAF61.. (for SKB62UA only) *
G (SP) System potential AC 24 V
G0 (SN) System neutral
* Only with sequence
control and the
appropriate selector
switch settings
(see page 6)
SKB32..
A
C 230 V
3-Position
SKB82..
A
C 24 V
3-Position
SKB6..
A
C 24 V
DC 0...10 V, 4...20 mA,
0...1000 Ω