ZPA Pecky, a.s. Modact MOKP 100 Ex Series, Assembly And Operation Manual

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b) Type CPT 1A passive current transmitter.
Power supply to the current loop is not a part of the actuator.
Recommended feeding voltage is 18 – 28 V DC, at maximum loading resistance of the loop 500
Ω
. The current
loop should be earthed in one point. Feeding voltage need not be stabilized; however, it must not exceed 30 V or
else the transmitter could be damaged.
Range of CPT 1A is set by a resistance transmitter on the transmitter body and its starting value by corresponding
partial turning of the transmitter.
Technical parameters of CPT 1A:
Scanning of position capacity
Working stroke adjustable 0° – 40° to 0° – 120°
Non-linearity ≤ 1 %
Non-linearity, including gears ≤ 2.5 % (for a maximum stroke of 120°)
Hysteresis, including gears ≤ 5 % (for a maximum stroke of 120°)
( The non-linearity and hysteresis are related to a signal value of 20 mA ) .
Loading resistance 0 – 500
Ω
Output signal 4 – 20 mA or 20 – 4 mA
Supply voltage for R
load
= 0 – 100
Ω
10 to 20 V DC
for R
load
= 400 – 500
Ω
18 to 28 V DC
Maximum supply voltage ripple 5 %
Maximum transmitter power demand 560 mW
Insulation resistance 20 M
Ω
at 50 V DC
Insulation strength 50 V DC
Operational environment temperature -25 °C to +60 °C
Operational environment temperature – extended range -25 °C to +70 °C (additional on demand)
Dimensions ø 40 x 25 mm
c) Type DCPT active current transmitter.
Power supply to the current loop is not a part of the actuator. Maximum
loading resistance of the loop is 500
Ω
. For variants
MODACT MOKP Ex Control
with the regulator ZP2.RE4, it is
used as a position sensor.
DCPT can be easily set by two push-buttons with LED diode on the transmitter body.
Technical parameters of DCPT:
Scanning of position contact-less magneto-resistant
Working stroke adjustable 60° – 340°
Non-linearity max. ±1 %
Loading resistance 0 – 500
Ω
Output signal 4 – 20 mA or 20 – 4 mA
Power supply 15 – 28 V DC, < 42 mA
Working temperature -25 °C to +70 °C
Dimensions ø 40 x 25 mm
For the transmitters CPT 1A as well as DCPT, a two-wire connection is used, i.e., the transmitter, the power
supply and the load are connected in series. The user should secure that the two-wire circuit of the current transmitter
is connected to the electric earth of the associated regulator, computer, etc. This connection should only be made at
a single point in any section of the circuit, outside the actuator.
Position indicator
The actuator is fitted with a local position indicator.
Anti-condensation heater
The actuators are fitted with an anti-condensation heater preventing condensation of water vapour. It is connected to
the AC mains of voltage 230 V.
Local control
Local control serves for controlling the actuator from the site of its installation. It includes two change-over switches:
one with positions “Remote control - Off - Local control”, the other “Open - Stop - Close”.