The T3480 is a six-channel 4–20 mA guarded analog output module for the ICS Regent system. Dual conversion paths, triplicated I/O Safetybus communication and continuous circuit comparison help prevent a single internal or system fault from changing an output unintentionally.

• Six 4–20 mA output channels
• Dual 12-bit D/A converters per channel
• 0–4095 application data range
• Single-module fail-safe operation
• Two-module fault-tolerant operation with hot replacement
• 2500 V minimum field-to-logic isolation

Regent processors send triplicated commands over the I/O Safetybus. Two independent logic sections vote the data and drive separate D/A paths for every channel. One path drives the field output and the other provides a reference; both signals must agree before the output is enabled.
For fault-tolerant service, two T3480 modules are wired in parallel with STATUS IN and STATUS OUT cross-strapped. One controls the loads while the standby module tests its drive circuits. Transfer to the standby module occurs in less than 5 ms after a controlling-module failure.

• System: ICS Regent I/O chassis with triplicated I/O Safetybus.
• Software: WINTERPRET I/O Configuration Editor.
• Programming: 0–4095 corresponds to 4–20 mA. Engineering units can be converted with the analog scaling function block.
• Slot keying: upper connector position 9 and lower connector position 10.
• Fault response: the chassis fault-mode jumper selects shutdown-to-zero or hold-last-state behavior.

1. Confirm the catalog number, hardware revision and Regent compatibility.
2. Verify the external 24 VDC supply and available current.
3. Connect every output to a load. Short the two terminals of each unused channel at the I/O chassis as specified in the manual.
4. For a redundant pair, verify parallel output wiring and A/B status cross-strapping.
5. Confirm slot keying, fault-mode jumper position and WINTERPRET point definitions.

The T3480 is TÜV certified as non-interfering and is intended for non-safety-critical outputs within a safety system. Process safety must not depend on this module. Annual recalibration is recommended. Calibration and latent-fault testing require an operational Regent system, WINTERPRET, precision loads and the T3322 I/O module extender.

• Second T3480: required for the documented fault-tolerant configuration.
• T3322 I/O module extender: used for calibration and latent-fault testing.
• Regent I/O chassis and WINTERPRET: required system and engineering environment.

The following part numbers are available for separate quotation. They are not identified as T3480 replacements, and no compatibility with the ICS Regent system is implied.

• 751659
• 05022639001
• E0X95AA
• NG4250R KCU10
• 2000-5420/1399-987
• TPU321 IC9054
• 7080-25
• ATMR5
• CTS100422 UTS-110361
• PX410-025GI
• WMZT2C25
• WMZT1DX0T
• KA34U
• FAZ-C6/1-NA-L
• BES516327A0Y
• ET20-318 ER20
• LRB526032
• AADE0375J3CRB
• SPGX0703-C1 T3000D
• 32.5-1A VC29
• WMZT1D01
• 5531088 SCD 023-009-030
• KL3045
• ZL-CBL40-S
• 7000-17121-2940500