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Sensaphone
®
ISACC Instruction Manual
phone
receptacle
RS232
port
7.5"
9"
Mounting ISACC circuit board
After the holes have been drilled, mount the board with the hardware provided. Use a nylon
washer between the board and the screw, and a nylon spacer between the board and mounting
surface. Both wood screws and machine screws have been provided for your convenience.
POWERING ISACC
IMPORTANT: Before applying power to ISACC, the ON-OFF switch must be in the
OFF position. The ON-OFF switch is located to the right of the acrylic panel, below the
power supply terminal block.
Located on the board is a terminal block labeled POWER. The power supply specification for
ISACC is 20 to 24 Volts AC, 50 or 60 Hz. This is applied through the two terminals labeled 24
AC.
You may use either an external AC power supply or an external DC power supply. Follow the
requirements and connection instructions below exactly so that problems and/or damage do
not occur. Three manufacturers of AC transformers that are compatible with ISACC are
Magnetek Triad (#F6-20), Thordarson (#FP-507), and Stancor (#P8661).
CAUTION: To avoid the danger of shock or damage to the unit, only qualified
personnel should wire and service the power supply.
AC supply requirements:
1. The voltage range for powering ISACC is 20 to 24 VAC.
2. The AC supply should be able to provide a minimum of 1.5 Amp at the required
voltage.
AC supply connections:
1. Wire the primary side of the 20 - 24 VAC transformer to the 120 VAC supply.
2. Wire the secondary side of the 20 - 24 VAC transformer to the terminals marked
24AC on the ISACC POWER terminal block.