Honeywell Field Termination Assembly (FTA)

Honeywell Field Termination Assembly (FTA)

Description

Terminal connectors on the Field Termination Assembly (FTA) provide the connection points for the process control wiring. Fuses, relays, and resistors protect the FTA circuitry, and sense, condition, or operate the connected device. The FTA communicates with an associated IOP, which in turn communicates with the HPMM(s) through the I/O Link Interface.

FTA Type

High Level Analog Input/ Smart Transmitter Interface (HLAI/STI)：Accepts high level analog inputs. The inputs are configurable as singleended or differential in relation to logic ground. The FTA is also used to interface Smart Transmitter devices.

High Level Analog Input (HLAI)：Accepts high level analog inputs. The inputs are configurable as singleended or differential in relation to logic ground.

Smart Transmitter Interface (STI)：Interfaces with Smart Transmitter devices. The interface is referenced to logic ground. The Smart Transmitter provides field isolation.

Low Level Analog Input (LLAI)：Can be configured to accept low-level or high-level analog inputs. Low-level analog inputs include Thermocouples (TC), Resistance Temperature Detectors (RTDs), or millivolt sources. High-level inputs such as voltage sources (0-5 V) and 4-20 milliamp current loop devices are acceptable.The inputs are isolated from each other and the HPM, but share a common bus for field wire shields.

Low Level Analog Input Multiplexer (LLMux or RHMUX)：The FTA accepts one set of low level analog inputs, such as thermocouples (TC) or Resistance Temperature Detectors (RTDs). The set of inputs must be either thermocouples or RTDs. The inputs are sequentially multiplexed. One or two FTAs of either type can be connected to one Power Adapter assembly and its IOP.

Analog Output (AO)：Provides 4-20 mA analog outputs to proportioning loads such as valves.

120 Vac Digital Input (DI)：Accepts ac digital inputs. All inputs are isolated from each other. Two versions of the FTA are available, with pluggable and without pluggable input modules.

240 Vac Digital Input (DI)：Similar to the 120 Vac DI FTA, except it has a higher operating voltage and a lower sense current. The inputs are in four groups of eight circuits with a common return for each group. Groups are isolated from each other.

24 Vdc Digital Input (DI)：Accepts contacts grouped with an isolated common return. Two versions of the FTA are available, with pluggable and without pluggable input modules.

120/240 Vac Solid-State Digital Output (DO)：Provides solid-state ac digital outputs that are isolated from each other and the HPM.

3-30 Vdc Solid-State Digital Output (DO)：Provides dc digital outputs that are isolated from each other and the HPM.

31-200 Vdc Solid-State Digital Output (DO)：Provides dc digital outputs that are isolated from each other and the HPM.

24 Vdc Nonisolated Digital Output (DO)：Provides nonisolated digital outputs to loads such as lamps and relays. The signals are referenced to logic common.

120 Vac/125 Vdc Relay Digital Output (DO)：Provides independent electromechanical relays for ac or dc digital outputs.

240 Vac/125 Vdc Relay Digital Output (DO)：Provides independent electromechanical relays for ac or dc digital outputs.

Pulse Input (PI)：Accepts eight inputs, each with a 32-bit counter, and have a frequency range of dc to 20 kHz. The inputs are referenced to logic ground.

Serial Device interface (SDI Toledo)：The SDI FTA provides an EIA-232 (RS-232) asynchronous serial communications interface for a model 8142-2084 or 8142-2184 Toledo Weigh Cell peripheral manufactured by Toledo Scale Inc.

Serial Device interface (SDI M/A Station)：The SDI FTA provides an EIA-422/485 (RS-422/485) asynchronous serial communications interface for up to four model MU-MASX02 Manual/Auto Station peripherals manufactured by Honeywell Inc.

Serial Device interface (SDI UDC 6000)：The SDI FTA provides an EIA-422/485 (RS-422/485) asynchronous serial communications interface for up to four UDC 6000 Modbus peripherals manufactured by Honeywell Inc.

Serial Interface (SI Modbus RTU)：The SI FTA provides either an EIA-232 (RS-232) asynchronous serial communications interface for one Modbus compatible device or an EIA-422/485 (RS-422/485) asynchronous serial communications interface for up to 15 Modbus RTU compatible devices.

Serial Interface (Allen-Bradley)：The SI FTA accommodates a single EIA-232 compatible Allen-Bradley device through its EIA-232 interface.

Remote Hardened Low Level Analog Input Multiplexer (RHMUX)：Accepts one set of low-level analog inputs. The inputs are sequentially multiplexed and can be either thermocouple (TC) or millivolt (Mv). One or two FTAs can be connected to its Power Adapter assembly and IOP.

Remote Hardened Multiplexer Non-Incendive Power Adapter (RHMUX NIPA)：The RHMUX NI Power Adapter provides the interface between an RHMUX IOP and one or two RHMUX FTAs, which can be mounted in a Division 2, Zone 1, or nonhazardous location.

Remote Hardened Multiplexer Intrinsically Safe Power Adapter (RHMUX ISPA)：The RHMUX IS Power Adapter provides the interface between an RHMUX IOP and one or two RHMUX FTAs, which can be mounted in a Division 1 or Zone 0 location.

High Level Analog Input (HLAI/STI)：The HLAI/STI FTA accepts high level analog inputs. All inputs are isolated from ground and each other. The FTA is also used to interface Smart Transmitter devices.

High Level Analog Input (HLAI)：The HLAI FTA accepts high level analog inputs. All inputs are isolated from ground and each other.

24 Vdc Digital Input (DI)：The 24 Vdc DI FTA accepts contact inputs. All inputs are isolated from each other.

Analog Output (AO)：The AO FTA provides isolated 4-20 mA outputs to proportioning loads such as valves.

24 Vdc Digital Output (DO): The 24 Vdc DO FTA provides isolated digital outputs to loads such as solenoid valves or lamps.

FTA Mounting Channels

The FTAs are installed at the rear or front of a dual-access cabinet on one or more FTA Mounting Channels. In a single-access cabinet, the FTAs are mounted on FTA Mounting Channels at the front of the cabinet. The FTA Mounting Channels also function as cable and wiring channels, or troughs. The standard and Galvanically Isolated FTAs must not be mounted on the same FTA Mounting Channel. Mounting both types of FTAs on the same FTA Mounting Channel is an Intrinsic Safety violation because the field wiring must not be routed in the same channel.

Mounting orientation

Both standard (non-Galvanically Isolated) and Galvanically Isolated FTAs can be mounted on vertically oriented 3-foot long FTA Mounting Channel segments; however, Standard and Galvanically Isolated FTAs must not be mounted on the same FTA Mounting Channels. Galvanically Isolated FTAs can be mounted on an FTA Mounting Channel that is above or below an FTA Mounting Channel that has standard FTAs mounted on it. Optionally, Galvanically Isolated FTAs can also be mounted on horizontally oriented 2-foot long FTA Mounting Channels. Standard FTAs must not be mounted on horizontal FTA Mounting Channels.

Compression or screw terminals available

Most standard FTA types are available with either compression-type or screw-type terminal connectors. Some exceptions are the 6-inch Analog Output (AO), 6-inch High Level Analog Input (HLAI), 6-inch Low Level Analog Input Multiplexer (LLMux), and the 6-inch Digital Input Power Distribution Assembly, which are available with compression-type terminal connectors only. The Remote Hardened Low Level Analog Input Multiplexer (RHMUX) mounts in a separate enclosure and is available only with screw-type terminal connectors. The number of terminals for both the compression-type and screw-type terminal connector can vary depending on the type of standard FTA. All Galvanically Isolated FTAs are available with both crimp pin-type and compression-type terminal connectors. The Marshalling Panel that is used with Galvanically Isolated FTAs is available only with screw-type terminal connectors. See Section 15 for a description of the Marshalling Panel.

Stock part list:

MC-TSIM12
51303932-476
51303940-250
51304337-150
51304362-100
51304362-350
51304386-100
51304453-150
51304477-100
51304485-100
51304511-200
51304690-100
MC-PAIH03
51304754-150
51304903-200
51304907-200
51304920-100
51305072-100
51305072-200
51305072-300
51305348-100
51305430-100
51305508-200
51305517-100
51305557-100
51305890-175
51305896-200
51309204-175
51309223-175
51309276-150
51400646-100
51400667-100
51400668-100
51400669-100
51400756-100
51400901-100
51400910-100
51400926-100
51400955-100
51400978-100
51400997-200
51401052-100
51401288-100
51401288-200
51401291-100
51401303-200A
51401303-300A
51401303-400A
51401496-100
51401551-200
51401551-201
51401551-301
51401570-100
51401583-100
51401635-150
51401642-150
51401946-100
51402000-200
51402083-100
51402199-100
51402455-100
51402497-200
51402573-150
51402573-250
51402615-400
51402755-100
51403393-100
51403422-150
51403519-160
51403645-100(51403698-100)
51404092-100
51404092-200
51405098-100
51304487-150
51403988-150
MC-PAOX03 51309152-175