15
EN
ADPR1X914124.02 06/2021 EN/DE
WIKA operating instructions, models F2220, F2221, F2226
5. Commissioning, operation
5.5 Electrical connection
To prevent interferences from coupling into the system:
■
Use only shielded and low-capacitance measuring cables (for cables, see chapter 10
“Accessories”).
■
Ground the shield of the measuring cable.
■
Connect the cable shield with the case of the tension/compression force trans-
ducer. In the cables of the accessories, the cable shield is connected by means
of the knurled nut, thus connecting it to the case of the tension/compression force
transducer (for cables, see chapter 10 “Accessories”).
■
Do not install measuring cables in parallel to 3-phase-current cables and control cables.
■
Avoid stray fields of transformers, motors and contactors.
■
Transducers, amplifiers and processing or display units must not be grounded sever-
al times. Connect all instruments to the same protective conductor.
The pin assignment of the connector or of the cable can be found on the product label.
When using extensions, only shielded and low-capacitance cables should be used. The
permitted maximum and minimum lengths of cable are defined in ISO 11898-2. Care
should be taken about the shielding.
5.6 Connecting an amplifier
■
The use of an amplifier is possible as an option.
■
The amplifier is not included in delivery.
■
The tension/compression force transducers described in these operating instructions
output a signal in mV/V based on strain gauges.
■
Any DC amplifiers and carrier amplifiers designed for strain gauge measuring
systems can be used.
Electrical connection - Cable assignment
Excitation voltage (+)
Red
Excitation voltage (-)
Black
Signal (+)
White
Signal (-)
Green
A
B
C
D
E
F
Electrical connection mV/V connector
Excitation voltage (+)
Pin A&B
Excitation voltage (-)
Pin C&D
Signal (+)
Pin F
Signal (-)
Pin E
5.7 Pin assignment models F2220, F2221
5.8 Pin assignment model F2226
