Thermo Scientific LevelPRO Series, Installation Manual

Page: 34 / 111

Wiring
Power Supply
4-6
LevelPRO Installation Guide Thermo Fisher Scientific
If the optional AC power board is installed, the gauge may be operated
using 115 or 230 Vac. The AC selector switch is shown in the figure below.
Caution
Applying 230 Vac with the selector switch in the 115 Vac
position will damage the equipment.

J9 on the CPU board is the connector for the AC power supply, and J17
on the AC power supply is the wiring connector. Refer to the wiring
drawing (868503) and to the figure below.
Figure 4–2.
AC power supply board
Caution
For reliable operation and to maintain safety approval, the F1 fuse
on the AC power board must only be replaced with an approved fuse.

Warning
Remove all power from the unit before making any connections.
Electrocution can result if power is present.

The AC power supply option can be purchased with two relays. Relay
contacts are Form C SPDT, isolated 8 A, 220 Vac. The relays can be
configured to open or close on events or faults or with level measurement.
Refer to the LevelPRO user manual for instructions.
Refer to the
wiring drawing (868503) and the label inside the transmitter
cover for wiring details.
Optional AC Power
Relays