Despatch MIC1462 Controller Manual Manual de usuario descargar pdf (Pagina 91)

APPENDIX C: SPECIFICATIONS

Input Specifications

Input Sample Rate: Four per second

Input Resolution: 14 bits approximately

Input Impedance: Greater than 100M ohm resistive (except for

DC mA and V inputs)

Isolation: Universal input isolated from all outputs except

SSR at 240 VAC.

Thermocouple Inputs

Types: R, S, J, T, K, L, B, and N

Note: Thermocouple must not be grounded! Damage to

the cold junction in the control will result!

Calibration: Complies with BS4937, NBS125 and IEC584.

Sensor Break Protection: Break detected within 2 seconds. Control

outputs set to OFF (0% power); alarms operate as if the

process variable has gone over-range.

RTD and DC mV Inputs

Type and Connection: Three-wire Pt100

Calibration: Complies with BS1904 and DIN43760.

Lead Compensation: Automatic

RTD Current: l50µA (approximately)

Sensor Break Protection: Break detected within 2 seconds. Control

outputs set to OFF (0% power); alarms operate as if the

process variable has gone under-range.

DC mA and DC V Inputs

Scale Range Maximum: - 1999 to 9999

Scale Range Minimum: -1999 to 9999

Minimum Span: 1 display LSD

Sensor Break Protection: Applicable to 4-20mA, 1-5V, and 2-10V ranges

only Break detected within 2 seconds. Control outputs set to

OFF (0% power); alarms operate as if the process variable

has gone under-range.

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Despatch MIC1462 Controller Manual Manual de usuario Pagina 91