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FW_F127PELTP_v1702_02_EN
5.2
TERMINAL CONNECTORS INTRINSICALLY SAFE APPLICATIONS
The unit is classified as group IIB/IIIC by default
Classification of the unit as group IIC is only possible under the following conditions:
The indicator is either supplied by
the internal supply (type PC);
the external supply connected to terminals 0 and 1 (type PD);
the circuit supply connected to terminals 7 and 8 (type AP);
The maximum values for any of those circuits are those as defined for group IIB/IIIC;
No other active external Intrinsically safe circuits may be connected to the indicator, with
exception of circuits connected to terminals 3 and 4 and/or terminals 5 and 6; the maximum
values for any of those circuits are those as defined for group IIB/IIIC.
Terminal connectors F127-P-EL-TP-XI:
For intrinsically safe applications, consult the safety values in the certificate.
Fig. 25: Overview terminal connectors - Intrinsically safe (typical)
