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7500 S
M
P
erieS
anual
CCC approval
general Information
Supplementary information
2.3.2
Terminal Connection Data
Connector cross section solid min.
Connector cross section solid max.
Connector cross section flexible min.
Connector cross section flexible max.
Connector cross section flexible, with ferrule without plastic sleeve min.
Connector cross section flexible, with ferrule without plastic sleeve max.
Connector cross section flexible, with ferrule with plastic sleeve min.
Connector cross section flexible, with ferrule with plastic sleeve max.
Connector cross section AWG min.
Connector cross section AWG max
2.3.3
Wiring requirements and Electrical Connections
Wiring requirements
1.
All applicable local and national wiring codes must be followed when wiring the system. See IEC
60079-14 for more information.
2.
The power supply to this device shall have a separate disconnect. If placed in the hazardous area,
it shall be rated for the area in which it is being installed. Placing the disconnect into the purged
enclosure is not a "safe" area, since power needs to be applied to the control unit before the purge
cycle is complete.
3.
The protective earth wire must be the same size as largest wire used to bring power into the
enclosure. Terminate using a ring lug that is properly crimped at the protective earth stud in the
bottom of the enclosure. The protective earth terminal torque is 1.36 Nm (12 in-lb).
4.
External protective earth ground wire must have minimum cross-sectional area of 4mm. Terminate
using properly crimped wire termination at grounding stud on side of housing. Terminal torque: 1.36
Nm (12 in-lb)
5.
All wire shall be copper only, rated at a minimum of 80 °C.
6.
The wire strip length into the fixed terminal block is 8 mm.
7.
For terminal torque requirements, see Section 2.3.7 Torque Requirements: Control Unit.
8.
There shall be only one wire per terminal.
9.
It is recommended to leave a bit of extra wire loop in the housing.
14
d
roducT
eScriPTion
Ex ec mc nC [pzc Gc] IIC T6...T4 Gc
Ex mc tc [pzc Dc] IIIC T60 °C...T80 °C Dc
Certificate No.: 2020322304002487
Type Examination Certificate, Declaration of Conformity, and
instructions have to be observed where applicable. For information
see www.pepperl-fuchs.com.
0.2 mm²
6 mm²
0.2 mm²
4 mm²
0.25 mm²
4 mm²
0.25 mm²
4 mm²
24
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