Rockwell Automation 1771-QRD PULS FLOWMTR - Manual (Page 14)

Installation
Chapter 3
3–3
The sensor cable must be shielded. The shield must extend the length of
the cable, but be connected only at the 1771–QRD end. The recommended
sensor wiring cable type is Belden 8761 or similar. The functions of the
individual terminals of the field wiring arm are shown in Figure 3.1.
The wiring diagrams for both magnetic pickups and TTL are shown in
Figures 3.2 and 3.3, respectively.
Electrostatic Discharge Electrostatic discharge can damage the integrated
circuits in this module, if you touch the backplane connector pins. Avoid
electrostatic damage by observing the following precautions:
Touch a grounded object to rid yourself of charge before handling the
module.
Do not touch the backplane connector or connector pins.
When not in use, keep module in its static-shield bag.
CAUTION: Electrostatic discharge can degrade performance
or damage the module. Handle as stated above.
Now that you have determined the power requirements, location, keying
and wiring for the 1771–QRD Module, you are ready to install it in the I/O
chassis.
1. Turn off power to the chassis.
2. Place the module in the plastic tracks on the top and bottom of the
slot to guide the module into position.
3. Seat the module into the connector by applying firm, even pressure.
Do not force the module into its backplane connector.
4. Snap the chassis latch over the top of the module to secure its
position.
5. Connect the wiring arm to the module.
6. Turn on power to the chassis. The green “ACTIVE” light should be
illuminated. If it is not lit, there is no power being applied to the
module. Turn the power off, re-insert the module and try again.
Connect one or more signal sources to the 1771–QRD. The signal source
can be a magnetic pickup/turbine flowmeter or TTL pulses.
Electrostatic Discharge
Module Installation