Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Bedienungsanleitung PDF herunterladen (Seite 40)

MODCELL Multiloop Processor

ELECTRICAL CONNECTIONS

3.5.4 2002A and 2012A Current Inputs (VCIM)

Make current input connections to terminal block as shown in Figure 3-6.

The 2-wire version of the milliampere input receives its loop current from a 24V dc current

supply built into the module. This current supply is automatically connected in the circuit

when the 2-wire input connection is made. The load on the transmitter is nominally 100

ohms. Input specifications are:

ANALOG INPUT (CURRENT WITH 2-WIRE TRANSMITTER POWER)

Range: (0-100%) 4 to 20mA

Low limit: 0 mA

Upper limit: 27.5 mA

Input Resistance: 50 ohms

Noise filter: 3 db at 5 Hz

Resolution: 14 bits

Sensitivity: 1 uA

Accuracy (calibrated): ±0.2% of span

Two Wire Excitation Supply

Open circuit voltage: 24V ±5%

Short circuit current: maximum at 38 mA

Isolation : 250 Vrms

Max Survivable Input: ±300 VDC or 250 VAC (Differential)

Common mode rejection: 100 db at 60 Hz minimum

Normal mode rejection: 40 db at 60 Hz minimum

The non-2-wire transmitter version of the milliampere input receives its loop current from a

supply in the transmitter. The transmitter load is nominally 100 ohms. The transmitter

may be grounded or ungrounded. Input specifications are:

ANALOG INPUT (CURRENT)

Range: (0-100%) 4 to 20 mA

Low limit: 0 mA

Upper limit: 24 mA

Input Resistance: 2.5 ohm

Noise filter: 3 db at 5 Hz

Resolution: 13 bits

Sensitivity: 1.6 uA

Accuracy (calibrated): ±0.2%

Isolation : 250 Vrms

Max Survivable Input: 50 mA DC (Differential)

Common mode rejection: 100 db at 60 Hz minimum

Normal mode rejection: 40 db at 60 Hz minimum

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Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Bedienungsanleitung Seite 40