42/23-51 EN Rev. 3
SCC-F Sample gas feed unit Operator’s manual
19
Connecting the electrical leads: SCC-F with I/O card,
continued
Connecting the
electrical leads
(continued)
Step Action
Connect the power supply to the sample gas feed unit:
8
Make sure the voltage setting shown on the rating plate matches
the line voltage.
9
Observe the requirements for the power supply cables!
Sample gas feed unit: Outer diameter 4.5–10 mm, suitable for cable
gland M16; wire cross-section 3 x min. 1.5 mm
2
; flammability class
VW-1 and FT-1; temperature resistance ambient temperature > 60 °C.
External solenoid valves: Outer diameter 3–7 mm, suitable for cable
gland M12; wire cross-section 2 x min. 1.5 mm
2
; flammability class
VW-1 and FT-1; temperature resistance ambient temperature > 60 °C.
10
Make sure the power supply leads have an adequately dimensioned
protective device (breaker max. 20 A).
11
Install a switched outlet or a breaker in the power supply wiring near
the sample gas feed unit. This should allow the sample gas feed unit to
be completely disconnected from the power supply if necessary. The
disconnection device should be identified in such a way that its
relationship to the equipment that it is designed to disconnect can be
clearly seen.
12
Connect the power supply leads to terminals L, N and PE on terminal
strip
X1
. Tightening torque of the screws 0.5–0.6 Nm.
13
Connect the power supply cable to the power supply.
The sample gas feed unit may start when the power supply is
connected.
Continued on next page
