Electrical Connections; Devices For Ex Zone 1 (Ec 911 And Ec 912) - RMG EC 900 Operating Instructions Manual

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Electrical connections

Devices for Ex zone 1 (EC 911 and EC 912)

The versions for Ex zone 1 may only be connected to certified intrinsically safe circuits.
Further equipment may only be connected if the relevant explosion protection condi-
tions such as the permissible capacitance and inductance have been complied with (see
the separate ATEX approval documentation).
In the case of external power supply, the approved ISS 900 or CU 900 device is to be
used. Here you must only make sure that the cables and the length of the line are cor-
rect (external inductances and capacitances).
X29
+
Power supply
(max 8.2 V)
X18 X19
+ +
01 02
Make sure that the device is earthed (earthing screw on the right side)! In order to connect the de-
vice to the equipotential bonding, use a wire diameter of 4 mm².
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X17 X16
+ +
E8 E7
Digital inputs 5 to 8
X20 X21 X22
+ + +
03 04 05
Digital outputs
X15 X14 X8
+ + + +
E6 E5 Vo
Enco
X23 X13 X12
+ + +
06 E4 C3 Reference
Digital inputs
INSTALLATION
Earthing screw
X7 X6
+
Iin1 Iin2
Current in-
puts
X10 X9
0 + 0 +
Measuring
channel channel
Volume meter
27
X5
+ +
PT 1000