Monitoring and Operating the Controller
Run/Monitor the program
Prior to running the program, make sure all the “SP PROG” function prompts under the Set Up group “SP RAMP” have been configured with the required data.
“HOLD” appears periodically in the upper display indicating that the program is in the HOLD state.
ATTENTION SP Programmer parameter cannot be changed during RUN state (must be in HOLD state).
Run/Monitor functions
Table
Table 4-26 Run/Monitor Functions
Function |
| Press | Result | |
Set the Local |
|
|
| Upper Display = PV value |
| Lower |
| ||
Setpoint |
| Display |
| Lower Display = SP |
|
| or | To set the Local Setpoint value to where you | |
|
|
|
| want the program to start out. |
Run State |
|
|
| Initiates the setpoint program. |
| Run |
| ||
|
|
|
| |
|
| Hold |
| “RUN” appears in the upper display indicating |
|
|
|
| that the program is running. |
Hold State | Run |
| |
| Hold |
External Hold
To Begin | or |
Holds the setpoint program.
“HOLD” appears in the upper display indicating that the program is in the HOLD state.
The setpoint holds at the current setpoint.
If one of the Digital Inputs is programmed for the HOLD function, then contact closure places the controller in the HOLD state, if the setpoint program is running.
The upper display will periodically show “HOLD” while the switch is closed.
ATTENTION The keyboard takes priority over the external switch for the RUN/HOLD function.
Reopening the HOLD switch runs the program.
To go back to the beginning of the program.
4/07 | UDC2500 Universal Digital Controller Product Manual | 123 |
