Inputs

Number of channels

– 8. single-ended

Nominal Signal Range (Scale)

– 4 to 20 mA

Full signal range

– 1 to 23 mA

Line Fault Detection

– Short circuit current – > 23.5 mA

– Open circuit current – < 0.5 mA

Output voltage (@ 20 mA)

-13.5 V (min.)

Output current

– 32 mA (max)

Accuracy (over temperature range)

– ± 0.1% of range

Resolution

– 16 bits

Repeatability

– 0.05 of range

Isolation

– Any channel to rail bus – 100 V ac

– Between channels – none

Configurable parameters

Alarms

– High, High-High, Low and Low-Low

Alarm deadband (hysteresis)

– User-defined values

Input Filter Time Constant

– User-defined value

Input Deadband

– User-defined value

Drive is in a fail-safe state

– Disable/Upconversion/Downconversion

Channel Status

– Active / Inactive

HART variables and status reports

– Enabled / Disabled

Response time

Signal change to railway bus availability

– 4-20 mA mode – 27 ms (maximum)

– HART mode – 0.75 seconds per channel

Safety

FM Non-Flammable Field Wiring Parameters

(per channel)

– Voc = 28.7 V; Isc = 33 mA; Ca

= 0.17 μF; La

= 11.0 mH

Power Supply

Rail bus (12V) Current

– 100 mA (typical)

– 150 mA (maximum)

Bus Field Power

– 2-wire Tx – 300 mA (max)

– (@ 24 VDC ±10%) 4-wire Tx – 60 mA (max)

Mechanical

Module Key Codes

– A1

Module Width

– 42 mm

Module weight

– 200 g