Nextron MASTERTRACE MS-2102, Руководство оператора

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9.2
MS-2102 Chapter 9 Commissioning
3. Choose a test temperature for each RTD input and
select corresponding resistances for each of the
resistance decade boxes using the table of RTD
resistances in figure 9.1 and 9.2. The temperatures
for each RTD should be different. For the RTD
simulator, set the test temperature of each unit.
4. Turn on power to the controller.
5. Display the temperature of each RTD
(MEASURED\OPERATING VALUES\HEATER
CONTROL TEMP. The two values should agree with
the selected temperatures within the accuracy of the
controller and test equipment.
6. If there is a significant discrepancy, consult the
factory for service.
Heater Voltage and Current Test (MS2102 controller only)
Equipment:
one voltmeter
one clamp-on ammeter
adjustable load bank (240VAC/10kW)
240VAC/30A single phase variac
You can perform voltage and current measurement tests
on the same test setup. Rather than using an adjustable
load, you can use a fixed load in conjunction with a variac
to adjust the input supply voltage.
To test heater 1 voltage and current,
1.
Disconnect any field wiring to terminals 2,3,4 and 5.
2. Connect the adjustable variac outputs to terminals 2
and 3. Connect the input supply of the variac to
either 208 or 240VAC. 120VAC will work but will not
provide an effective test range for voltage testing.
3. Connect the load bank to terminals 4 and 5.
4. Connect the voltmeter across terminals 2 and 3.
5. Connect a clamp-on ammeter around one of the load
cables.
6. Set the variac control for 120VAC and turn on the
power.
7. Force the heater on by setting the manual heater
function for 1 hour (SETPOINT\SETPOINT
TEST\MANUAL HEATER).
8. Display the heater current
(MEASURED\OPERATING VALUES\HEATER
CURRENT).
9. Adjust the variac control within the voltage range of
the controller and compare the readings of the
display with the ammeter.
10. Display the heater voltage
(MEASURED\OPERATING VALUES\HEATER
VOLTAGE).
11. Adjust the variac control to take another set of
readings. Repeat until enough readings are taken to
cover the range. Current and voltage readings should
be within the accuracy of the controller and test
equipment.
12. If there is a significant discrepancy, consult the
factory for service.
The test procedures for heater 2 voltage and current are
as same as the above procedures except that the power
in/out terminals are 26, 27, 28 and 29. Also, the measured
voltage for heater 2 is actually the input voltage of heater
1.
Figure 9.3 Test Setup