Discrete Input/Output Modules
BMX DDI 1602 Input Modules
NOTE: For the BMX DDI 1602H, confirm that the maximum value of the sensor power supply does not exceed 26.4 V when operated at 70 °C (158 °
F).
WARNING
OVERHEATING MODULE
Do not operate the BMX DDI 1602H at 70 °C (158 °F) if the sensor power supply is greater than 26.4 V or less than 21.1 V.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
Connecting the Module
At a Glance
The BMX DDI 1602 module is fitted with a removable 20-pin terminal block for the connection of sixteen input channels.
Input Circuit Diagram
The following diagram shows the circuit of a direct current input (positive logic).
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BMX DDI 1602 Input Modules
Module Connection
Discrete Input/Output Modules
DANGER
HAZARD OF ELECTRICAL SHOCK, EXPLOSION OR ARC FLASH
Switch off the sensor and pre-actuator voltages before connecting or disconnecting the module.
Failure to follow these instructions will result in death or serious injury.
CAUTION
LOSS OF INPUT FUNCTION
Install the correct rating and type of fuse.
Failure to follow these instructions can result in injury or equipment damage.
The following diagram shows the connection of the module to the sensors.
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power supply: 24 VDC fuse: fast blow fuse of 0.5A
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Discrete Input/Output Modules
Sensor Power Outage
BMX DDI 1602 Input Modules
After a power sensor outage, if the Supply monitoring check box is not selected in the module configuration screen then the digital input can stay active.
WARNING
DIGITAL INPUT STATE INACTIVE AFTER A SENSOR POWER OUTAGE
Do not click to clear the Supply monitoring check box in the module configuration screen to guarantee the digital input state inactive after sensor power outage.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
To access the Supply monitoring check box, refer to chapter
How to Modify the
External Power Supply Error Monitoring Parameter , page 282
.
After the sensor power outage, the I/O (red) LED of the module switches on and the last recorded position of the sensor is displayed by the input channel status
LED's.
WARNING
CHANNEL LED INFORMATION NOT MATCHING SENSORS POSITION
After a sensor power outage:
• The I/O error LED is on
• Do not take into account the input LEDs information (they show the last recorded position of the sensors, not their real positions)
• Check the real positions on the sensors.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
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