DANGER
Check safety-related values
Connecting an intrinsically safe sensor, actuator, or HART eld device to the input/output of an
electronic module must produce an intrinsically safe circuit! For this reason:
When you select the encoder, actuator or HART eld device to be connected to the electronic
module, the resulting safety-related values must be checked!
The inductance and capacitance of the cable must also be taken into account! Refer
to Conguration Options in Zones (Page 66).
WARNING
Check the wiring
If the wrong electronic module is used or the terminals are connected incorrectly to the
sensors, actuators or HART eld devices, the intrinsic safety is put at risk:
Connect only Ex i circuits to the intrinsically safe inputs and outputs of the electronic modules.
Check the wiring between the electronic modules and sensors, actuators, and HART eld
devices.
When wiring according to NAMUR recommendation NE21, read the notes A.2. and A.3. in
Appendix A of the recommendation. This means that all signal lines do not need to be shielded.
However, it is recommended to shield the analog signals for optimal accuracy. The
communication cables are laid shielded and connected centrally to the equipotential bonding
rail in the Ex area.
Wiring rules
Table 6-6 Wiring rules for ET 200iSP
Wiring rules for ... TM-PS-A, TM-PS-B TM-IM/EM, TM-EM/EM
(spring and screw termi‐
nal)
Connectable wire cross-sections for solid wires 0.5 mm to 4 mm² 0.14 mm to 2.5 mm²
Connectable wire cross-sections for
exible wires
Without end sleeve 0.5 mm to 2.5 mm² 0.14 mm to 2.5 mm²
with wire end ferrules 0.5 mm to 2.5 mm² 0.14 mm to 1.5 mm²
Number of conductors per terminal 1 wire 1 or combination of 2 wires
up to 1.5 mm (total) in a
common wire-end ferrule
Length of insulation to be stripped 11 mm
Ferrules according to DIN 46228 without insulation collar Form A, up to 12 mm long Form A, up to 12 mm long
With insulation collar 0.25
to 1.5 mm
Form E, up to 12 mm long Form E, up to 12 mm long
Tightening torque 0.5 to 0.7 Nm
Wiring
6.4 Wiring the ET 200iSP
ET 200iSP
126 Operating Instructions, 11/2022, A5E00247483-AK