Omega Vehicle Security CN3271 Series manual Logic Inputs, Outputs, Alarm

STANDARD RANGES TABLE

	Input		type			impedance	Accuracy
15		0 - 60 mV				> 1 MΩ
16		12	- 60 mV
17		0 - 20 mA				< 5 Ω
18		4 - 20 mA					0.2 %	+ 1 digit
19		0	-	5 V		> 400 kΩ	@ 25°C
20		1	-	5	V		(77	°F)
21		0	- 10		V	> 400 kΩ
22		2	- 10		V

D) LOGIC INPUTS

(for models with RS-485 only)

This instrument is provided of 1 logic input used for remote acknowledgement.

NOTES

1)Use an external dry contact capable of switching 0.5 mA, 5 V DC.

2)The instrument needs 100 ms to recognize a contact status variation.

3)The logic inputs are NOT isolated by the measuring input.

OUTPUTS

Output updating time :

-250 ms when a linear input is selected

-500 ms when a TC or RTD input is selected.

OUTPUT 1

Type: relay SPDT contact .

Contact rated: 3 A at 250 V AC on resistive load.

Function: Safety limiter output.

Action: reverse (fail-safe).

OUTPUT 2

Type: relay SPST contact .

Contact rated: 2 A at 250 V AC on resistive load.

Function: Alarm output

Action: direct/reverse programmable by front keyboard.

ALARM

Action: Direct or reverse acting.

Alarm functions: configurable as process alarm, band alarm or deviation alarm.

Alarm reset: automatic reset, manual reset or "Silence" function is programmable.

Stand by (mask) alarm: the alarm can be configured with or without stand by (mask) function.

Process alarm:

Operative mode : High or low programmable.

Threshold : programmable in engineering unit within the readout span.

Hysteresis: programmable from 0.1 % to 10.0 % of the readout span.

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LHL-1-NEUTRO.pmd 23 19/04/2004, 15.07