Instruction Manual

IDS 430/433 Users Manual Version 1.0
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HARDWARE INSTALLATION AND WIRING
This section describes installation and wiring information for the interface ports.
There are two bi-directional serial ports, digital port with 3 TTL inputs, 3 TTL
outputs, and one load cell input port. The serial ports are used to interface to a
printer and to a host device or PC for continuous output. The TTL outputs and
inputs are used for remote switch input and relay control. The load cell input is
used to interface to the scale platform.
Load Cell Connector – TB1
NOTE: Remove jumpers JP1 and JP2 to enable SENSE LINES for 6 wire load
cells. Wire the sheilding from the load cells to the chassis not TB1 pin 7.
Load Cell Terminal Block – TB1
Pin # Signal Name
1 + Signal
2 - Signal
3 + Excitation
4 + Sense
5 - Sense
6 - Excitation
7 Analog ground (NOT FOR SHIELD)
Power Source AC / DC
The unit comes standard with an onboard transformer the AC interface
connector is a 3 pin Molex type, this connects to the motherboard where
the 3 pin Molex header is mounted on the board marked A/C power.
For DC power applications there ia a 2 position terminal block marked
PWR-DC. Note the polarity of the terminals. The positive is marked as ( + )
the negative ( - ). The DC power input will exept +12 to +28 VDC. Remove
AC power before wiring for DC.
I/O Port Connector - TB 3
The I/O port connector has Com Ports 1 and 2 and the digital TTL inputs.
Pin # Signal Name
1 +5V (CL2 TX +)
2 TXD 1 (RS232)
3 RXD1 (RS232)
4 Soft +5 volts (220 ohm to +5V)
5 GND (CL1 TX-)
6 CL1 TX +
7 GND
8 TTL IN 1
9 TTL IN 2
10 TTL IN 3