Replacing Communication Module; Figure 26 - Pwa Replacement - Honeywell SMV800 SmartLine User Manual

10.4 Replacing Communication Module

This section includes the procedure to replace Communication Module.
Transmitter does not have to be removed from service to replace Comm Module
Please take appropriate steps to avoid ESD damage when handling Communication
and Display Modules
Refer to Figure 26 for parts locations.
1. Turn OFF Transmitter power (Power removal is only required in accordance with area safety
approvals. Power removal is only required in Class 1 Div 1 Explosionproof and Class 1 Div 2
environments).
•
When removing Communications Module with power applied, loop output will be
0V or 0 mA. Likewise, when installing Communication Module into Transmitter
with power applied, loop output will be 3V or 12 mA for several seconds then
measured PV value.
•
Installing Display Module into a powered Transmitter may cause a temporary
fluctuation to loop output value.
2. Loosen End Cap Lock and unscrew it from the electronics side of Electronics Housing.
3. If equipped with Display Module, carefully press the two tabs on the sides of Display Module
and pull it off from Communication Module.
4. If necessary, unplug Interface Connector connecting Display Module and Communication
Module . Do not discard this connector.
5. Loosen the two retaining screws, and carefully pull Communication Module from Electronics
Housing. Disconnect Sensor Cable from connector "J4" at the bottom of Communication
Page 66
Figure 26 – PWA Replacement
SMV800 Transmitter User's Manual
Revision 10