Appendix A: Safety Instructions – Ver. 1.00
33
For further information regarding the connections, the function of the different signals and
special connections for RHM with fixed cable, please refer to chapter 4 “Electrical Installation”
and to appendix A “Ex-safety instructions” of the RHM manual.
For maintaining the spacing between IS and non-IS circuits the following rules apply:
IS connector FKC or FKCN:
The adjacent non-IS connectors must be FKCN.
IS connector MSTB with housing:
Housing must be properly closed. Any non-IS connector allowed.
The supplied connectors have cage clamp or screw type terminals for:
Conductor cross-section:
0.2 – 2.5mm²
Stripping length:
6 – 9mm
A.9
Ordering Code
The following extract of the ordering code shows the information relevant for hazardous areas.
Eaa-EEPP-SSOO-HHCC-OOO
Eaa
RHE Version
E26 = RHE26
E27 = RHE27
EE
Housing Options
E1 = panel mount
E2 = panel mount with transparent door
H1 = DIN rail mount (RHE26 only)
H2 = DIN rail mount with transparent door (RHE26 only)
PP
Power supply options
D1 = 12 to 24V DC
A1 = 100 to 240V AC
U1 = DC plus AC
SS
SW Options
OO
I/O Configuration Options
HH
Hazardous areas approvals
ATEX, IECEx:
AS = II (1)G [Ex ia Ga] IIC
RHE in safe area, RHM in zone 0, 1, 2 or safe area
CSA (USA and Canada)
CS = [Exia Ga] IIC
RHE in safe area, RHM in any zone or division
CC
Measurement Certifications
OOO
Special Options
Not all combinations are possible. For available combinations see instructions.
Where no versions for the place holders are specified, these parameters are not relevant for the
Ex certification.
Where versions are specified (e. g. for “PP Power Supply Options”: D1, A1 etc.), versions not listed
here are not available with Ex certification.
