Samson 2488 N - Electrical Connection

18 EB 3136 EN
Mounting and start-up
5.4 Electrical connection
Î See Fig.5 and Fig.2
Upon installation of the electric cables, you
are required to observe the regulations con-
cerning power installations according to
DINVDE0100 as well as the regulations of
your local power supplier.
Use a suitable power supply which guaran-
tees that no dangerous voltages reach the
device in normal operation or in the event of
a fault in the system or any other system
parts.
Connect the actuator to the electrical network
only after the power supply is rst switched
off. Make sure the power cannot be switched
on unintentionally.
A power supply of 230V (10%) or 24V
(10%), 50Hz is required (uEB5857 for
more details).
Î Connect the electric actuator using the
three-wire connecting cable (see Fig.5).
If voltage is applied to the white and
green wires, the actuator motor retracts
the actuator stem (18). The restriction
stem (12) is pushed upward by the
spring (15), causing the ow rate to rise.
In contrast, a control signal applied to
the white and brown wires causes the ac-
tuator stem to extend. The restriction stem
(12) is pushed downward by the spring
(15), causing a lower ow rate.
WARNING
!
Three-step version
BNWH GN
aL eL
L
N
Ce Ce
eL
aL
BN BK YE GN RD OG
24 V, 50 Hz 0...10 V 0...10 V
_
+
_
+
NL
Version with positioner
BNWH GN
aL eL
L
N
Ce Ce
eL
aL
BN BK YE GN RD OG
24 V, 50 Hz 0...10 V 0...10 V
_
+
_
+
NL
eL Actuator stem retracts
aL Actuator stem extends
Note: The interference suppression capacitors
Ce in the output circuit of the connected control-
ler must not exceed a value of 2.5nF to ensure
the proper functioning of the actuator.
Fig.5: Electrical connection