Calibration
Note: For best results, calibration should be performed with the
intended output load, in the operating environment, mounted
on a DIN rail, allowing at least one hour for thermal equilibrium
of the system.
1. Install the module on to a piece of DIN rail and the ACPB rail
mounting combination. See the ACPB rail Data sheet for details.
Note: An ACPB rail is required to deliver power to the modules.
See ordering information.
2. Connect the input to a calibrated DC source and the output
to a voltage or current meter. Apply power and allow the system
to reach thermal equilibrium (approx. 20 minutes).
3. Adjust the input signal to the desired maximum and observe
that the green LED is on or flashing. Push the CAL button and
hold it down for more than 5 seconds (until the yellow and Green
LEDs are flashing).
Figure 1: Input Connection
Figure 2: DRI-DC and DRI-SP-AC Calibration Flow Chart
Type
Selector SW1
5
6
7
8
Unipolar
-
-
-
Bipolar
-
-
-
Reverse
-
-
-
Direct
-
-
-
Current
-
-
Voltage
-
-
Key:
= 1 = ON or Closed; - = n/a
Ranges
Selector SW1
Voltage
Current
1
2
3
4
20mV
2mA
50mV
5mA
100mV
10mA
200mV
20mA
500mV
50mA
1V
100mA
2V
5V
10V
25V
50V
100V
Key:
= 1 = ON or Closed
Ranges
Selector SW2
Output
1
2
3
4
5
6
7
8
0 to 5V
0 to 10V
0 to 1mA
4 to 20mA
0 to 20mA
Key:
= 1 = ON or Closed
Table 1: Input Range Settings for Single Channel Module
(DRI-DC)
Table 3: Output Range Settings for Single Channel Module
(DRI-DC)
Table 2: Input Function Settings for Single Channel Module
(DRI-DC)
Table 4: I/O Range & Function Settings
for Dual Channel Module (DRI-SP-AC)
Figure 1: Input Connection
4. When the yellow and green LEDs stop flashing, the yellow
and red LEDs will be on. Push the CAL button momentarily (the
yellow and green LEDs will be on).
Note: To quit the calibration mode and reset the unit, push the
CAL button and hold for more than 5 seconds. Or, wait for more
than two minutes and the unit will timeout and reset itself to the
previously stored calibration.
5. Apply the maximum input signal level desired, and push the
CAL button to store (the yellow LED will be on).
6. Apply the minimum input signal level desired, and push the
CAL button to store (the green and red LED will be on.
7. Adjust the input signal while monitoring the output signal until
the output is at the desired maximum level (e.g. 20.00mA), then
push the CAL button to store (the red LED will be on).
8. Adjust the input signal while monitoring the output signal until
the output is at the desired minimum level (e.g. 4.00mA), then
push the CAL button to store (the yellow, green and red LEDs
will be on).
9. Push the CAL button one final time to store the calibration data.
The green LED will be on if the input is within the calibrated range.
