Data Sheet for Product
21 / 24
Siemens Control device PN25, safety function to DIN EN 14597 CE1N4387en
Building Technologies 2020-04-29
Connection diagrams
(Y1)
(Y2)
N1
N
0 %
F1
AC 230 V
(L)
(N)
max. 6 A
F1 safety limiter (e. g. temperature
limiter)
N1, N2 controller
Y1, Y2 actuators
L Phase
N neutral
(Y1) controller contacts
(Y2) controller contacts
Y1 Positioning signal «open»
Y2 Positioning signal «close»
21 spring-return function
max. 6 A
(Y1)
(Y2)
N1
N
0 %
F1
AC 230 V
(L)
(N)
F1 safety limiter (e. g. temperature
limiter)
N1, N2 controller
Y1, Y2 actuators
L Phase
N neutral
(Y1) controller contacts
(Y2) controller contacts
Y1 Positioning signal «open»
Y2 Positioning signal «close»
21 spring-return function
Y1 actuator
N1 controller
F1 safety limiter (e. g. temperature limiter)
F2 frost protection thermostat
terminals: 1 – 2 frost hazard / sensor is interrupted (thermostat closes with frost)
1 – 3 normal operation
F3 temperature detector
F4 frost protection monitor with 0…1000 Ω signal output *
G (SP) System potential AC 24 V
G0 (SN) System neutral
* QAF21.. and QAF61.. frost protection monitor cannot be connected with control devices MK..5...
MKB533..,
MKC533..,
3-position
MKD533..
3-position
MK..563..,
DC 0…10 V,
4…20 mA,
0…1000 Ω