User guide

Watlow Series SD Limit ■ 38 ■ Chapter 8 Factory
Current Process Input Procedure
Equipment
• Precision current source, 0 to 20 mA range, with
0.01 mA resolution.
Input Setup and Calibration
1. Connect the correct power supply to terminals 1
and 2 (see Chapter Two).
2. Connect the current source to terminals 11(-) and
8(+).
3. Enter 4.00 mA from the current source to the con-
troller. Allow at least 10 seconds to stabilize. Set In-
put Calibrate, 4 mA [``A;4] to [`yES]. Press the
Advance Key ‰ to store the 4 mA input and move
to the next prompt.
4. Enter 16.00 mA from the current source to the con-
troller. Allow at least 10 seconds to stabilize. Set In-
put Calibrate, 16 mA [`A;16] to [`yES]. Press the
Advance Key ‰ to store the 16 mA input and move
to the next prompt.
5. Rewire for operation and verify calibration.
Process Output 3 Setup and Calibration
Equipment
• Precision volt/ammeter with 3.5-digit resolution.
1. Connect the correct power supply to terminals 1
and 2 (see Chapter Two).
Volts
2. Connect the volt/ammeter to terminals 14 (-) and
13 (+).
3. At Output 3 Calibrate, 1V [03;1u] select [~YES]
and press the Advance Key ‰. The voltage output
value appears in the upper display. Press the Up ¿
or Down Key ¯ to adjust the upper display value
to match the value from the volt/ammeter. The unit
should stabilize within one second. Repeat until the
volt/ammeter reads 1.00V, ±0.1V. Press the Ad-
vance Key ‰ to store the value and move to the
next prompt.
4. At Output 3 Calibrate, 9V [03;9u] select [~YES]
and press the Advance Key ‰. The voltage output
value appears in the upper display. Press the Up ¿
or Down Key ¯ to adjust the upper display value
to match the value from the volt/ammeter. The unit
should stabilize within one second. Repeat until the
volt/ammeter reads 9.00V, ±0.1V. Press the Ad-
vance Key ‰ to store the value and move to the
next prompt.
5. Rewire for operation and verify calibration.
Milliamperes
6. Connect the volt/ammeter to terminals 12 (+) and
14 (-).
7. At Output 3 Calibrate, 4 mA [03;4a] select [~YES]
and press the Advance Key ‰. The current output
value appears in the upper display. Press the Up ¿
or Down Key ¯ to adjust the upper display value
to match the value from the volt/ammeter. The unit
should stabilize within one second. Repeat until the
volt/ammeter reads 4.00 mA, ±0.1mA. Press the
Advance Key ‰ to store the value and move to the
next prompt.
8. At Output 3 Calibrate, 16 mA [03;16] select [~YES]
and press the Advance Key ‰. The current output
value appears in the upper display. Press the Up ¿
or Down Key ¯ to adjust the upper display value
to match the value from the volt/ammeter. The unit
should stabilize within one second. Repeat until the
volt/ammeter reads 16.00 mA, ±0.1 mA. Press the
Advance Key ‰ to store the value and move to the
next prompt.
9. Rewire for operation and verify calibration.
Restoring Factory Calibration
• Press the Up ¿ and Down ¯ keys together for six
seconds until [FaCT] appears in the upper display
and [PagE] appears in the lower display.
• Press the Advance Key ‰ to step through the pa-
rameters until the [rESt] appears.
• Use the Up Key ¿ to select [`yES] in the upper
display.
• Press the RESET Key to exit the Factory Page.