Electric 24VDC Digital Input Module Triconex DI232 Schneider

Termination Panels with Interposing Relays

Termination panels with interposing relays can be used with most digital output modules and

are recommended for these applications:

• Load currents greater than 2 amps

• Field voltages greater than 115 VAC

• Voltage-level conversions

• Motor-starter circuit compatibility

Interposing relay panels are available in these configurations:

• 16-point c

ommoned

• 16-point non-commoned

The digital outputs of the interposing relays are not fault-tolerant. However, each relay

provides an auxiliary contact that can be fed into a digital input to send a loopback signal to the

control program. A user-written loopback check in the control program can ensure that the relay

has achieved its commanded state. The loopback cable must be ordered separately.

Each interposing relay panel provides the capability to common power and return through a

factory-mounted bus-bar arrangement.

Each interposing relay panel consists of:

• A 7 in x 19 in (36 cm x 48 cm) rack-mountable panel with terminals for 16 digital

outputs and 16 digital inputs.

• Two ELCO connectors mounted on the panel for connecting to digital input modules

using digital input cables 9141-010. 9142-010. or 9143-010.

• An EIA standard RS-310-C plate on which the termination panel is mounted.

• A digital output module and a cable compatible with the selected coil voltage.

Bypass Panel for Digital Inputs

Bypass termination panels can be used to connect digital inputs using a bank of 32 pre-wired

switches. Bypass panels have a master keyswitch and terminals for redundant +24 VDC power

sources. Each input point contains an ON status indicator and can be energized only if the

master keyswitch is ON and the corresponding point switch is ON. Each point has a location for

a user-definable label.

Each bypass termination panel comes with one or two 10-foot (3-meter) cables for connecting

the termination panel to a Tricon backplane.

Termination Panel with RTD/TC/AI Input Signal Conditioning

Termination panels which use industry-standard analog signal conditioners provide a flexible,

user-configurable interface to resistive thermal devices (RTDs), thermocouples, and 4-20 mA

transmitters. Each termination panel supports 16 points and each analog module can support

up to 2 panels. These termination panels are compatible with any signal conditioners in the 1 to

5 volt output range. For example, the 7B series of signal conditioners from Analog Devices™ are

known to work well.

Termination Panel 9251-210 for Digital Output Module 3603B

The special 16-point non-commoned digital output termination panel 9251-210 is required for

use with the 16-point non-commoned digital output module 3603B.

Termination Panel 9863-710 for Analog Output Module 3806E

The special analog output termination panel 9863-710. with buffered loopback signals, is

available for use with the high-current analog output module 3806E