Aquametrix 2200P pH Analyzer/Controller User Manual - Manual (Page 13)

Model 2200P Page 11
4.6.4
When in the menu mode, the display initially shows the current value of the
parameters, such as the setpoint of the control relay, while putting all of the outputs
on hold. The two arrow buttons are used to adjust the display value up or down.
To accept the new value press ENTER twice. While the value on the display is
being changed, the relay outputs and the analog outputs remain on hold.
The items that appear in the operation menu are:
• Password
• Test
• Calibration
• Auto Calibration
• Temperature
• Status
• Output High
• Output Low
• Relay A Cycle on time
• Relay A Cycle off time
• Relay B Cycle on time
• Relay B Cycle off time
• Relay A Relay On
• Relay A Relay Off
• Relay B Relay On
• Relay B Relay Off
• Alarm Relay High
• Alarm Relay Low
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 installation, 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 into the menu mode. Therefore, after changes to the DIP switch settings, you
must enter the menu by pressing MENU in order for the instrument to scan the new
switch setting.
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 Reserved
8 0-5V / 0-1mA Select PH Temperature