ControlLogix Current Loop Output Module 15
Publication 1756-5.36 - September 1999
1756-OF6CI Specifications
Number of Outputs 6 individually isolated channels
Module Location 1756 ControlLogix Chassis
Backplane Power Requirements
(No external power requirements)
250mA @ 5.1V dc & 225mA @ 24V dc (0-550
Ω
loads terminated
on OUTs and RTNs) (6.7W)
250mA @ 5.1V dc & 300mA @ 24V dc (551-1000
Ω
loads
terminated on OUTs and ALTs) (8.5W)
Power Dissipation within Module
Thermal Dissipation
5.5W (0-550
Ω
loads)
6.1W (551-1000
Ω
loads)
18.76 BTU/hr (0-550
Ω
loads)
20.80 BTU/hr (551-1000
Ω
loads)
Output Current Range 0 to 21mA
Current Resolution 13 bits across 21mA (2.7µA)
Data Format Integer mode (Left justified, 2s complement)
Floating point IEEE 32 bit
Open Circuit Detection None
Output Overvoltage Protection 24V ac/dc maximum
Output Short Circuit Protection Electronically current limited to 21mA or less
Drive Capability 0-1000
Ω
Separate field terminations for ranges 0-550
Ω
or 551-1000
Ω
Output Settling Time <2ms to 95% of final value with resistive loads
Calibrated Accuracy at 25°C
Calibration Interval
Better than 0.1% of range from 4mA to 21mA
Six months typical
Output Offset Drift with Temperature 1 µA/degree C typical
Gain Drift with Temperature 60 ppm/degree C typical (100 ppm maximum)
Module Error over Full Temp. Range 0.6% of range
Module Scan Time for all Channels 25ms maximum floating point
10ms maximum integer
Isolation Voltage
Channel to channel
User to system
Optoisolated, tranformer isolated
100% tested at 1700V dc for 1s, based on 250V ac
100% tested at 1700V dc for 1s, based on 250V ac
Module Conversion Method R-Ladder DAC, monotonicity with no missing codes
Inductive Load <1 mH
RTB Screw Torque (NEMA) 7-9 inch-pounds (0.8-1Nm)
Module Keying (Backplane) Electronic
RTB Keying User defined
Field Wiring Arm and Housing
20 Position RTB (1756-TBNH or TBSH)
1
Environmental Conditions
Operating Temperature
Storage Temperature
Relative Humidity
0 to 60°C (32 to 140°F)
-40 to 85°C (-40 to 185°F)
5 to 95% noncondensing
Conductors Wire Size
Category
22-14 gauge (2mm
2
) stranded maximum
1
3/64 inch (1.2mm) insulation maximum
2
2, 3
Screwdriver Width for RTB 5/16 inch (8mm) maximum
Allen-Bradley Drives
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