Sterling GP Series specifications Alarms, Optional Communications

the to accept the password. The following screen will appear.

Figure 9 - Operator Setpoints Screen

3.Depress to move the cursor to the Leaving Temp line. Use the or button to increment or decrement the value. Depress to accept the value and move the cursor down one line.

4.Adjust the Hi Temp Warning and Hi Temp Fault in the same manner.

5.Depress the button twice to return to the main status screen.

4-6 Alarms

The controller is setup with multiple alarms, most of them configurable using the Supervisor password. Section 4-5 Controller Setpoints gives a list of alarms that the controller is setup to display. The alarms are broken up into two categories – warnings and faults. The warning notifies the user that the parameter has been exceeded and the chiller is allowed to keep operating, but should be monitored to determine the cause of the warning. The fault notifies the user that the parameter has been exceeded and the chiller and pump has been shut down to protect the system.

4-7 Optional Communications

The communications function allows you to monitor and set the parameters by a program prepared and running on a host computer connected to the controller.

When using the communications function, you must add on the unit for RS-485 Modbus communications. The communications function allows you to read/write parameters, do operating instructions, and select the setting level.

GP Series Portable Chillers Chapter 4: Operation 30 of 44