Aquametrix 2200R ORP Analyzer/Controller User Manual User Manual
Page 14
Model 2200R
Page 12
4.7 DIP Switches
4.7.1
The controls which are frequently used in the normal operation of the instrument are
all accessible through the operation menu. Some options, which are infrequently
used or set only once during installiation, are located on the back of the swing-out
board in two banks of dip switches. Both banks (S1 and S2) are located near the
upper left corner of the board and consist of 8 switches each. (Refer to Fig.1)
4.7.2
The DIP switches are scanned only on power-up and every time the instrument is
taken out of the menu mode. Therefore, after changes to the DIP switch settings,
you must enter the menu by pressing CALL, and then exit the menu by pressing
RUN in order for the instrument to scan the new switch settings.
4.7.3
The following table describes the use of the 16 DIP switches:
Bank S1
Dip Switch Description
ON
OFF
1
Selects temperature unit
°C
°F
2
Password Feature
Disabled
Enabled
3
Fail-Safe mode for Relay A
Enabled
Disabled
4
Direction of Control for Relay A
Falling
Rising
5
Alarm Relay to be activated for memory loss
Disabled
Enabled
6
Fail-Safe mode for Alarm Relay
Enabled
Disabled
7
Auto return from menu
Enabled
Disabled
8
0-5V / 0-1mA Select
ORP
Temperature
Bank S2
Dip Switch Description
ON
OFF
1
Fail-Safe mode for Relay B
Enabled
Disabled
2
Direction of Control for Relay B
Falling
Rising
3
Cycling Control for Relay A
Enabled
Disabled
4
Cycling Control for Relay B
Enabled
Disabled
5
Reserved
6
Reserved
7
Reserved
8
Reserved
Note: Items in “BOLD” are the factory settings that the unit will be shipped with.
4.8 Output Hold
4.8.1
Output hold, is a function which freezes all output signals at the last value to
prevent the occurrence of wild distortions during programming and maintenance.
4.8.2
When the Operations Menu is entered by pressing CALL, the relays and the analog
outputs are automatically placed on hold and remain on hold until the instrument
returns to on line. (unless you have used the arrow buttons while in TEST) The
output hold will remain for a maximum of 10 minutes after the last button was
pressed, this feature has been enabled. Refer to Section 4.7.