Method for tightening terminal blocks - Metasys - M4-XPM04060 - M4-XPM09090 - M4-XPM18000 - Field Device - M4-XPM Expansion Module - 13.0

M4-XPM Expansion Modules Installation Guide

Brand
Metasys
Product name
M4-XPM Expansion Module
Document type
Installation Guide
Part number
24-10143-02147
Document revision
C
Version
13.0
Revision date
2023-10-02
Product status
Active
Language
English

Procedure

Do not use more force than is necessary when tightening the terminal block screws. To prevent applying excessive force when tightening the screws, apply the following steps:

  1. If available, use a torque screwdriver to tighten the screw to .25 NM (2.212 in. lbs.). The recommended bit size for the universal screws on the terminal blocks is a Phillips #1, or a slotted 1/8 in. (3.0mm) bit.
  2. If a torque screwdriver is not available, tighten the terminal screws until the screw is snug on wire, and then tighten the screw an additional quarter (90°) to half (180°) turn.
  3. Only use enough downward force necessary to keep the screwdriver bit engaged with the screw. Too much downward force while tightening the terminal screws can damage the terminal.
    Note: It is best practice to remove the connector block from the pin headers on the unit before wiring the terminal blocks. The best way to prevent any contact damage is to avoid torquing the terminal screws while the plugs are attached to the pin headers.