Rockwell Automation 1771-OQ/B Isolated 24V dc Output Module Installation Instructions - Manual (Page 3)

Publication 1771-IN081B-EN-P - June 2004
Isolated 24V dc Output Module 3
Preinstallation
Considerations This module contains soldered jumpers which must be removed when using
certain output devices, such as solenoids. These jumpers limit the effects of
noise. These jumpers are not reusable. Make certain that you will not be using
a particular output for other uses before clipping the jumper.
Set the Jumper
Configuration Your module contains a jumper for each output. Under normal conditions,
these jumpers are left in the position as shipped. When using solenoids as an
output device, remove the jumper on the circuit board. Removing the jumper
changes the off-state clamping voltage from -0.7V dc to -15.7V dc. This
decreases the turnoff time of the solenoid, allowing it to energize faster.
Follow the procedure listed below for removing a jumper. Refer to Figure 1.
1. Remove the plastic cover on the left front side of the module by
removing two screws.
2. Locate the jumper which corresponds to your output. Note: The
jumpers are usually brown with a black band.
3. Clip both ends of the jumper with diagonal cutters.
4. Replace the cover and secure with two screws
ATTENTION
Preventing Electrostatic Discharge
This equipment is sensitive to electrostatic discharge, which can cause
internal damage and affect normal operation. Follow these guidelines
when you handle this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• If available, use a static-safe workstation.
• When not in use, store the equipment in appropriate static-safe
packaging.
ATTENTION
Do not use a soldering tool to remove the jumper. This
could cause damage to the adjacent components or the
entire circuit board.