| Input, current |
Yes |
| Input, voltage |
Yes |
| Input, resistor |
No |
| Input, resistance thermometer |
No |
| Input, thermocouple |
No |
| Input signal, configurable |
Yes |
| Output, current |
No |
| Output, voltage |
No |
| Output signal configurable |
No |
| Analogue inputs configurable |
Yes |
| Analogue outputs configurable |
No |
| Type of electric connection |
Screw-/spring clamp connection |
| Wire type |
Copper |
| Output range |
-10…10V, 0…20 mA, 4…20 mA |
| Load reactance |
Voltage: 1 μF, Current: 10 μH |
| Terminal block torque specifications |
1756-TBNH: 1.36 Nm (12 lb. in.) |
| Input conversion method |
Successive approximation |
| Module keying |
Electronic, software configurable |
| Offset drift |
100 µV/°C, 200 nA/°C |
| Output conversion method |
R-Ladder DAC, monotonicity with no missing codes |
| Outputs |
Eight voltage or current, one HART modem per module |
| Data format |
Integer mode (left justified, 2 s complement) IEEE 32-bit floating point |
| Wire category |
2 – on signal ports |
| Overvoltage protection |
±24V DC |
| Module error |
Voltage: 0.15% of range, Current: 0.3% of range |
| Gain drift with temperature |
Voltage: 20 ppm/°C, Current: 35 ppm/°C |
| Voltage and current ratings |
Backplane: 5.1V DC, 230 mA, 24V DC, 230 mA, Output voltage: -10…+10.4V, Output current: 4…20 mA |
| Settling time |
Current (no HART): <23 ms to 95% with resistive loads, current (with HART): <37 ms to 95% with resistive loads, voltage: <8.5 ms to 95% with resistive loads |
| Total backplane power |
6.54 W |
| Thermal dissipation |
16.78 BTU/h |
| Power dissipation |
4.92 W |
| Resolution |
15…16 bits for all ranges |
| Wire size |
1756-TBNH: Single wire connection: 0.33…2.1 mm² (22…14 AWG) solid or stranded copper wire, rated at 105 °C (221 °F) or greater, 1.2 mm (3/64 in.) insulation maximum, 1756-TBNH: Double wire connection: 0.33…1.3 mm² (22…16 AWG) solid or stranded cop |
| Calibrated accuracy |
Voltage: Better than 0.1% of range @ 25 °C (77 °F) with HART disabled, Current: Better than 0.15% of range @ 25 °C (77 °F) with HART disabled |
| Open circuit detection time |
Current output only (output must be set to <0.1 mA) |
| Module HART scan time |
Analog: 12 ms, minimum, floating point, HART: typically 1 s per HART channel enabled. Estimate 10 s if all 8 channels have HART enabled, Pass through messages, handheld communicators, secondary masters, communication errors, or configuration changes can s |
| Suitable for safety functions |
No |
