22
EP100 Master Instruction
_____________________________________________________
D00002-C-04
12 SYSTEM CONFIGURATION IN
COMBINATION WITH CONTROL
UNITS
The safety requirements in page 4
must be observed!
12.1 Non-intrinsically safe operation
The EP100 can be connected directly to the 4 - 20 mA
output of the process control system or controller.
Load RL is approx. 300 Ohm.
PCS, CONTROLLER EP100
4 - 20 mA
12.2 Split range
If several actuators are to be controlled from an
identical conduct variable and carry out full stroke only
in a certain portion of this conduct variable, an
individual EP100 is to be provided for each actuator.
The zero and span of which can be set to the
respectively desired partial range of the conduct
variable.
The positioners are electrically switched in series. It is
important that the permissible load of the process
control system or
controller is not exceeded (RL of an EP 100 is approx.
300 Ohm).
The output voltage (idle voltage) must be >8.5 V per
connected positioner. The total line capacitance is not
to exceed 1 µF.
Example: 2-fold split range
PCLS, CONTROLLER EP100
4 - 20 mA
EP100
In the case of intrinsic safety, the same conditions as
described in 12.1 apply. The settings of the position
controllers are described on page 13.
