12
4. Calibration of currents 4 mA and 20 mA.
On switching-on the power supply, keep the push-buttons
“4” and “20” depressed and release them after a single
blink of LED. In this way the option menu 4.1 Calibration of current 4 mA is entered.
4.1. Calibration of current 4 mA
Connect the ammeter to testing terminals. Press the push-button
“20”. Keep depressed the push-button to evoke
the auto-repeat of current decrease. Release the push-button to make record of the present value.
4.2. Calibration of current 20 mA
Connect the ammeter to testing terminals. Press the push-button “4”. Keep depressed the push-button to evoke
the auto-repeat of current increase. Release the push-button to make record of the present value.
4.3. Switching-over between option of calibration 4 mA and 20 mA
Entry of option of calibration 4 mA:
Press the push-button
“4”, then the push-button “20” and keep them depressed until LED blinks.
Entry of option of calibration 20 mA:
Press the push-button
“20”, then the push-button “4” and keep them depressed until LED blinks.
5. Record of standard parameters
On switching-on the power supply, keep the push-buttons
“4” and “20” depressed and release them after a double
blink of LED.
ATTENTION! With this record, the transmitter calibration is also overwritten and, therefore, it must be repeated!!
Parameter setting
d) Torque-limit switches
The torque-limit switches have been adjusted to the specified torque at the factory. If they are required to
be readjusted to another torque, release the corresponding cam by means of the cam releasing screws whose
numbers are given in the legend of Fig. 3. By the linear division of the respective scale section between the
zero and the maximum switching torque as marked on the scale in colour, we obtain a point for the required
switching torque with which the arrowhead on the cam should tally. Retighten the cam releasing screw. For
manipulation of the releasing screws of the torque-limit switches, the same applies as to the releasing screws
of the position-limit switching unit. After the torque-limit switches have been adjusted, check that they operate
using a lamp tester.
Caution!
Any manipulation of the releasing screws numbered 2 and 4 is forbidden.
9. POSITION REGULATOR ZP2.RE VERSION 4
Electric regulators of position of output shaft ZP2 are used in the actuators MODACT Control. They provide for
controlling the actuator in which they are built in by analog input signal from the superior control system.
Basic component of the regulator is a microcomputer with control program in its internal memory.
Position “4 mA”
Set the actuator to required position
(usually Closed)
and keep the push-button 4 depressed until
LED blinks.
Position “20 mA”
Set the actuator to a required position
(usually Open)
and keep the push-button 20 depressed until
LED blinks.
2 s
2 s
20
4
- L
+ L
- U
+ U
1
DCPT
EHL elektronika
v.č. 000106
20
4
- L
+ L
- U
+ U
1
DCPT
EHL elektronika
v.č. 000106
Summary of Contents for MODACT MOK 1000
Page 2: ...ZPA Pe ky a s is certified company in accordance with ISO 90001 as amended...
Page 37: ...NOTE...
Page 38: ...NOTE...
