Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 36)

LT System General Implementation Rules
36
Wiring to the DIO Terminal Block
Introduction
Wiring Rules and Recommendations.
Screwdriver Required to Wire Terminal Blocks
Recommended type: 1891348-1 (Tyco Electronics AMP)
If another manufacturer is used, be sure the part has the following dimensions:
 point depth: 1.5 mm (0.06 in.)
 point height: 2.4 mm (0.09 in.)
Point shape must be DIN5264A and meet standard DN EN60900.
Also, the screwdriver tip must be flat, as indicated, to access the narrow hole of the terminal block:
The terminal blocks are a spring clamp type.
Procedure
CAUTION
EQUIPMENT DAMAGE
Be sure to remove the terminal blocks from the equipment prior to wiring.
Failure to follow these instructions can result in injury or equipment damage.