Honeywell Expert LS I/O System

Terminal block: TC-FTB301 (3-wire)/TC-FTB3T1 (temperature specific), each terminal block corresponds to 1 I/O module, providing on-site wiring terminals and backplane bus expansion.

Bus expansion cable: TC-PKTX30 (30cm)/TC-PKTX90 (90cm), used for separating rail connections.

I/O modules: covering DI/DO/AI/AO/RTD/TC/relays, etc., complementary to CIOM-A functions but with a more compact structure.

2. Key module parameters

Module Model Type Channel Specification Highlights

TC-FIAH81 high-level analog input 8 12 bits, 4-20mA/± 10V, response 4ms

TC-FIA121 high-level analog input 12 16 bits, accuracy 0.1%, isolated

TC-FID161 24VDC digital input 16 leakage type, adjustable filtering, 2.5k Ω impedance

TC-FID321 24VDC digital input 32 leakage type, two sets of 16 channels, 6k Ω

TC-FOD161 24VDC digital output 16 source type, 0.5A/point, short circuit protection

TC-FOD321 24VDC digital output 32 source type, 0.5A/point, two sets

TC-FIR081 RTD input 8-3-wire system, 16 bit, supports Pt/Ni/Cu

TC-FIL081 thermocouple input 8 16 bits, supports B, E, J, K, N, R, S, T

TC-FOR081 relay output 8 2A@240VAC ， Form A， Lifespan 100000 times

3. Power supply and power consumption

The gateway is powered by external 24VDC, with a power consumption of 4.6W, and provides 5V/640mA bus current to the I/O module through Flexbus.

The on-site power supply needs to be independently supplied externally, and the module power consumption is detailed in the manual (e.g. TC-FID161 is 6.1W).

4. Integration and Tools

Configure through pre-defined function blocks in Control Builder.

The NTOOLS tool is used for ControlNet network monitoring and gateway firmware upgrades.

The IOTOOL tool supports RIOM-A module calibration.

Network Communication and Control Integration

1. I/O ControlNet architecture

Physical layer: RG-6 coaxial cable (Belden 3092A), 5Mbps, supports repeaters and fiber optic extensions.

Topology limitations:

Each C200 has a maximum of 4 downlink CNIs, and a maximum of 8 uplink CNIs/gateways per downlink CNI.

Each downlink CNI has a maximum of 24 I/O units, and a total of 64 I/O units (including PMIO) per C200.

Redundant configuration: When C200 is redundant, the host rack must not insert I/O modules; CNI supports dual media redundancy.

2. DeviceNet integration

Hardware: Allen Bradley 1756-DNB (firmware v6.2), single slot, supports 125/250/500kbps.

Software: The DNETIF library provides DNET_SM (DNB module), DNETevice (device), and DNET-INCHAN/OUTCHAN (channel) function blocks.

Capacity: Up to 32 DNB modules per C200, up to 64 devices per module, up to 16 input/16 output channels per device, and up to 8 numerical values/32 discrete points per channel.

3. PROFIBUS DP integration

Hardware: SST-PFBCLX, single slot, DP-V1 master station, supports 12Mbps.

Configuration: Import GSD files through SST PROFIBUS configuration tool to generate bus parameters.

Capacity: Up to 10 PBIMs per C200, up to 100 slave modules per module, input/output data ≤ 496/492 bytes respectively.

Function blocks: PBI2 Device, PBI2 INCHAN/OUTCHAN Channel, supporting 8/16/32-bit integer and floating-point conversion.

4. Serial communication

TC-MUX021 provides 2 RS232/RS485 channels, supports Modbus RTU and AB DF1, and connects to on-site devices through MU-TSIM12/MU-TSIA12 FTA.

The maximum communication speed is 19.2kbps and supports external cables up to 305 meters in length (MU-KSX series).

Dangerous Area Certification and Entity Concept

1. North American Certification (NEC/CEC)

Grade: Class I, Division 2, Groups A, B, C, D; Class I, Zone 2, Group IIC。

Protection methods: intrinsic safety (IS), non intrinsic safety (NI), explosion-proof (XP), etc.

Temperature group: T4 (135 ℃) or T5 (100 ℃), etc., indicated on the module label.

2. International certification (IEC/CENELEC)

Zone 2 (some modules support Zone 1/Zone 0 via ia).

Standard: EN 50014/50020/50284, ATEX Directive.

Explosion proof mark: such as II (1) 2G EEx ia/ib IIB/IIC T4.

3. Entity parameters and interconnection rules

Intrinsic safety parameters: Ui, Ii, Ci, Li (field equipment).

Related side parameters: Uo, Io, Po, Ca, La (safety barrier/isolation module).

Interconnection criteria: Uo ≤ Ui, Io ≤ Ii, Ca ≥ Ci+Ccable, La ≥ Li+Lcable.

Simple devices: thermocouples RTD、 Passive devices such as dry contacts do not require separate certification.

4. RIOM-A intrinsic safety module

TC-PIA081/082: 8-channel 4-20mA input, supports 2/3 wire transmitters, intrinsic safety parameters Uo=23.7V, Io=92.5mA, suitable for Zone 1.

TC-PIL081: 8-channel TC/RTD input, supports multiple sensors, intrinsic safety parameters Uo=9V, Io=37mA.

TC-PIB161:16 channel NAMUR digital input, intrinsic safety parameters Uo=14.5V, Io=15mA.

TC-POA081: 8-channel 4-20mA output, intrinsic safety parameters Uo=21V, Io=93mA.

TC-POB04:14 channel digital output, load 30-500 Ω, intrinsic safety parameters Uo=27.4V, Io=110mA.

5. Installation requirements

All intrinsic safety modules must be powered through dedicated intrinsic safety terminal blocks (such as TC-PTBC11).

On site wiring must use shielded multi-core cables, with each channel independently shielded.

The cabinet must meet IP54 or above protection and be placed in a non hazardous area or with additional blowing.