Replacing The Hmi Connector - ABB 266 MODBUS User Manual

Replacing the HMI connector

If the HMI connector becomes damaged, it may be necessary to replace the part. The following procedure provides steps to
replace the HMI connector located between the LCD assembly and the electronics module.
WARNING – Bodily injury. When the housing covers are removed and power is still connected, there is a
potential for explosion. Failure to observe this safety information may result in death or severe injury.
Do not remove housing covers in hazardous (classified) areas or explosive environments unless the area is
known to be non-hazardous. Verify an explosive atmosphere is not present before removing the housing covers
when power is live.
This procedure does not require the transmitter to remain powered up.
1. Disconnect the power supply to the transmitter.
2. Use the instructions in section 5.2.1, Removing the housing cover, to remove the front housing cover, exposing the interior.
3. Use a slotted screwdriver to press the tabs on the LCD fixing locks to release the assembly and remove it.
4. Locate the damaged HMI connector and remove (Figure 37, page 48). If necessary, use a small pair of needle-nose pliers
to remove.
5. Carefully insert the replacement connector. Do not bend the pins.
6. Reinstall the LCD assembly, being careful to avoid damaging the connector pins.
7. Replace the front housing cover over the LCD assembly. Secure the housing cover (go to section 5.2.2, Securing the
housing cover).
8. Restore power to the transmitter.
266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB | 49
5 Service and maintenance