Honeywell UDC2500 Alarm Setpoints, Upper Display = the PV value Lower Display = Pids X X= 1 or

Monitoring and Operating the Controller

Switch between two sets via keyboard (without automatic switch-over) Table 4-19 Procedure for Switching PID SETS from the Keyboard

Step

Operation

Press

Result

1Select Control Set-up Group

Function

Until you see:

Upper Display = (the PV value) Lower Display = PIDS X (X= 1 or 2)

2

3

or	To change PID SET 1 to PID SET2 or Vice Versa.
	You can use Accutune on each set.
	To accept changes.
Function

4.14 Alarm Setpoints

Introduction

An alarm consists of a relay contact and an operator interface indication. The alarm relay is de-energized if setpoint 1 or setpoint 2 is exceeded.

The alarm relay is energized when the monitored value goes into the allowed region by more than the hysteresis.

The relay contacts can be wired for normally open (NO) energized or normally closed (NC) de-energized using internal jumper placement. See Table 2-3in the Section 2 – Installation for alarm relay contact information.

There are four alarm setpoints, two for each alarm. The type and state (High or Low) is selected during configuration. See Subsection 3.13 – Configuration for details.

Alarm Setpoints Display

Table 4-20 Procedure for Displaying Alarm Setpoints

Step

Operation

Press

Result

1Select Alarm Set-up Group

2Access the Alarm

Setpoint Values

Setup

Function

Until you see:

Upper Display = SET

Lower Display = ALARMS

To successively display the alarm setpoints and their values. Their order of appearance is shown below.

Upper Display = (the alarm setpoint value) Range values are within the range of the selected parameters except:

DEVIATION (DE) value = PV Span

EVENTS (E-ON/E-OF) value = Event Segment Number PV RATE OF CHANGE (PVRT) = The amount of PV change in one minute in engineering units.

LOOP BREAK ALARMS (BRAK) = The timer value may be changed only for controllers configured for ON/OF.

112 UDC2500 Universal Digital Controller Product Manual 4/07