Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Associated Hardware - Manual (Page 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
3 4