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) Moment switches
The moment switches are factory-set to a prescribed moment. If the moment switches are to be readjusted to another
moment a particular cam is released by a releasing screw
(numbers of releasing screws are given in the legend on Fig. 3)
.
By linear division of the section of a particular scale between zero and maximum cutting-out moment, which is depicted
on the scale by a special mark - colour, a point is received for the required cutting-out moment against which the cam
arrow is set. The releasing screw is then retightened. In manipulating the releasing screws of the moment switches
the same applies as for the releasing screws of the position unit. After setting the moment switches their proper cutting out
function is verified by a neon tester.
Warning:
The releasing screws marked 2 and 4 must not be manipulated.
Tripping torque cannot be set to a higher value than those that corresponding to the type No. in tables 1 and 1A.
REGULATOR ZP2.RE4
a) Description
The basic part of the regulator ZP2.RE4 is a microcomputer with control program in its internal memory. The regulator
has its own supply source with mains transformer and stabilizer. Supply voltage is also connected to contacts
of the output relays FO, FZ which are employed by the regulator in controlling the contactor combination. Electronics
of the regulator is protected by a fuse 160 mA, phase for controlling the contactors by a fuse 1.6 A.
The power input circuits of the regulator receive the signals MO and MZ from the limit switches and the signal TP from
the tripping contact of the thermal protection.
13
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.
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Summary of Contents for Modact MOKP 100 Ex Series
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