Wiring and installation recommendations for the model TBX ASS 200
(Original Document)
Wiring recommendations
To protect the signal from induced external noise in serial mode and noise in common mode, it is advisable to take the following precautions regarding:
Precautions to take
Type of conductors
Use screened twisted pairs, with a minimum conductor cross-section of 0.28 mm2.
Cable screening
Connect the cable screening to the shortest TBX module ground on the TBX GND 015 grounding strip.
Arrangement of the conductors in cables
Multipair cables can be rearranged for signals of a similar type which have the same reference to ground.
Cable routing
Keep the measurement wires separate from the discrete I/O cables (in particular from relay outputs) and from power cables.
Preactuator reference to ground
Note: There are no technical restrictions in referencing the preactuators to ground. However, for safety reasons, it is advisable to avoid using a ground voltage which is some distance from the terminal, as this ground voltage may be very different from the nearby ground voltage. Distributed I/O modules minimize this risk as they are usually close to the process.
Recommended voltage and current wiring: It is recommended to use preactuators with no reference to ground.
channel 0 (voltage)
channel 1 (current)