Watlow Series 922 - Manual (Page 73)

Appendix
73
WATLOW Series 922 User's Manual
L
H
G
Ω
General Radio Model #1433-T
3
4
5 8
7
6
Series 922
Terminal Strip
Channel 2
Series 922
Terminal Strip
Channel 1
correct line voltage, see Chapter 4, "How to Install and Wire.
3. Set DIP Switch #6 ON. Apply power to the Series 922 and allow it to warm
up for 15 minutes. The unit should be in the TEST mode.
4. Connect DVM common to TP2 and DVM positive to TP1 on the A007-
1729 circuit board. Located on the top side behind the center chassis
support. DVM should be set up for DC volts, and in a range capable of
displaying 6.300 volts.
5. Using the MODE key, advance until the DAS6 XXXX parameter appears in
the alphanumeric display. Using the UP/DOWN keys, adjust the alpha-
numeric display to match the DVM display. Press the ENTER key.
6. Press the MODE key until the CH1Z XXXX parameter, for Channel 1,
appears on the alphanumeric display [CH2Z XXXX for Channel 2]. Set the
RTD Field Calibration Procedure
Equipment Required
• 100
Ω
precision decade resistance box with 0.01 ohms resolution.
• 4-1/2 digit, digital voltmeter (DVM).
Setup and Calibration
NOTE: Before calibration on an installed control, make sure all data and
parameters are documented.
1. Connect the precision decade box to #6, #7, and #8 of the Series 922
terminal strip for Channel 1 as shown on Figure 39. For Channel 2 connect
the precision decade box to #3, #4, and #5 of the terminal strip.
2. Connect AC line voltage, L1 to #17, L2 to #20, ground to #21. Jumper for
Figure 39 -
Decade Resistance
Box-to-Series 922
Connection Diagram
RTD Calibration