RAD-ISM-900-EN-BD…
5-8
PHOENIX CONTACT
2476_en_I
5.2
I/O Module Descriptions
There are seven different I/O modules that can be used with the RAD-ISM-900-EN-BD-BUS
radio. They are powered from the radio through the 5-pin male/female connector on either
side of the radio and I/O module. They feature an 8-position rotary switch on the top of each
module for addressing.
Analog Input Module – RAD-IN-4A-I
This module has four (4) 0-22 mA current inputs. It can either accept powered loops or
provide the power for a loop. The power supply for the loops is common to the radio's power
supply.
Analog Output Module – RAD-OUT-4A-I
This module has four (4) 0-22 mA current outputs. It can accept either powered loops or
provide the power for a loop. Each current loop is optically isolated. Internally there are four
DIP switches that determine what happens to each current channel if the radio link is lost –
either “fail to 2 mA” or “maintain the last known value.”
Digital Input Module – RAD-IN-8D
This module has eight (8) digital inputs. Each input requires a voltage to trigger it. Each
channel is optically isolated.
Digital Output Module – RAD-OUT-8D
This module has eight (8) digital outputs. Each output is a normally open dry contact.
Internally there are eight DIP switches that determine what happens to each channel if the
radio link is lost – either “fail open” or “maintain the last known value.”
Analog/Digital I/O Module – RAD-IN+OUT-2D-1A-I
This module has a mix of inputs and outputs – 1 analog input, 1 analog output, 2 discrete
inputs and 2 discrete outputs. Internally there are DIP switches that determine the fail
condition of the outputs in a similar fashion as described in the above modules.
Pulse Input Module – RAD-IN-2D-CNT
This module has two configurable pulse or frequency inputs. A 5-position DIP switch inside
the module is used to set the mode of each channel, as well as the input impedance,
coupling, speed, and input type (single-ended or differential). It is compatible with the
following common pulse generating devices:
–
AC sine wave output devices such as magnetic transducers.
–
Digital pulse output devices such as microprocessor-based flow meters.
–
Mechanical relay pulse output devices or toggle switches.
Pulse Output Module – RAD-OUT-2D-CNT
This module has two configurable pulse or frequency outputs. A 4-position DIP switch inside
the module is used to set the mode of each channel as well as the speed (high or low).
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