Honeywell DR4300 manual Alarms Set Up Group, Alarms group prompts, Alarm Parameter Definitions

DR4300 Circular Chart Recorder

4.3.15 Alarms Set Up Group

Introduction

If the recorder hardware supports outputs, one or both relays can be used for alarming. An alarm is an indication that an event that you have selected during configuration (process variable, for example) has exceeded one or more alarm limits. There are two alarms available for each pen (assuming no relay is being used for control). Each alarm has two setpoints. There are two alarm output selections, high and low. You can configure each setpoint to alarm either high or low. Each alarm has an adjustable hysteresis of 0.0 % to 100.0 % that is configurable for that alarm's setpoint.

If the “OUTALG” function in the control group is set to “RLYD”, both relays on the printed circuit assembly for the pen being configured are used for control, and the prompts in the alarm group will not be displayed. If “OUTALG” is “RLY”, or if the recorder is a limit controller, then Relay 1 is used for control. In these cases only the prompts for the second alarm (Relay 2) will be displayed.

If “TIMER” is set to “ENAB”, then Relay 2 is used by the timer and prompts for the second alarm will not be displayed.

Alarms group prompts

Table 4-13lists all the function prompts in the alarms set up group and their definitions.

For a 2-pen recorder, the desired input channel is displayed on the left side of the operator interface.

Press FUNC to select channel.

Press SETUP key until “ALARMS” appears in the lower display.

Press FUNC key to select the parameters.

Table 4-13 Alarm Parameter Definitions

Lower Display	Upper Display	Parameter
Prompt	Range of Setting	Definition
	or Selection
A1S1TY*		ALARM 1 SETPOINT 1 TYPE—Select what you want
		Setpoint 1 of Alarm 1 to represent.
	NONE [factory setting]	NO ALARM
	INP	INPUT PV
	DEV	DEVIATION of input from setpoint
A1S2TY*	Same as A1S1TY	ALARM 1 SETPOINT 2 TYPE—Select what you want
		Setpoint 2 of Alarm 1 to represent. The selections are the
		same as A1S1TY.

*For Deviation Alarm to function: control must be enabled. If On/Off control is selected, only alarm #2 is available for Deviation.

A1S1VA	–999 to 9999	ALARM 1 SETPOINT 1 VALUE—This is the value at
	[factory setting = 100]	which you want the alarm type chosen in prompt
		"A1S1TY" to actuate. The appropriate value depends on
		what the setpoint has been configured to represent.
A1S2VA	–999 to 9999	ALARM 1 SETPOINT 2 VALUE—This is the value at
	[factory setting = 100]	which you want the alarm type chosen in prompt
		"A1S2TY" to actuate. The appropriate value depends on
		what the setpoint has been configured to represent.

106 DR4300 Circular Chart Recorder Product Manual 12/03