Optical Scientific Inc
OFS 2000CW User’s Guide
P/N 1910-905
Rev. 03/28/13
28
3.7 AC Power Connections
Power Requirements: single phase, 100-240 VAC, 50/60 Hz @ 1 A.
3.7.1 Transmitter Unit
AC power connections to the TX Unit are made to TB1 of the TX circuit board located on the left inside of the
TX housing. If optional power cords were ordered with the OFS, the power cords and weather-tight cord grips
are included with the order. If the user is supplying the power directly from an electrical panel, it is
recommended to use ½-inch flex conduit between the TX Unit and electrical panel to protect the cable from
damage and noise pickup.
Connect the AC power wires as shown. Note that the green/yellow earth wire from the user supplied AC power
cord should be connected to the earth ground stud in the TX Unit. The OFS is supplied with an internal
green/yellow ground wire from this stud to the ground terminal on the TX Electrical Assy. Customer supplied
protective earth wires must be green/yellow in color and be of the same size (gauge) as the incoming mains
supply conductors.
The Transmitter Board
ground plane must be
connected to the earth
ground with a jumper
(provided). Connect the
line AC ground to the
Transmitter enclosure.
(Note: The OFS Receiver
does not require AC
connection. It is powered
through the RX cable
connected to the control
unit.)
Figure 3.18 Transmitter AC Connections
3.7.2 Control Box
A licensed electrician may be required to make the AC
power connections depending on the work and safety rules
at your facility. Check with your supervisor before
proceeding.
The DC power supply is pre-wired to the terminal block. The
user simply need to connect the electrical supply wiring.
AC Wiring Connections are (L to R)
1. AC Line [Black or Brown wire]
2. AC Neutral [White or Blue wire]
3. AC Ground [Green or Green/Yellow]
Note that this is a universal input power supply.
100-240 VAC, 50/60 Hz, 40 VA
Figure 3.19 Control Box AC Connections
A licensed electrician may be required to make the AC power connections depending on the work and safety
rules at your facility. Check with your supervisor before proceeding.
