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BRAND |
WOODWARD |
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Model |
5437-672 |
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Origin |
USA |
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Condition |
New |
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Type |
Field Termination Module |
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l Sales Manager: Miya l Email: sales@amikon.cn l WhatsApp: 86-18020776792 |

LARGE INVENTORY SUPPLY
BRAND WOODWARD
MODEL 5437-672
TYPE Field Termination Module (FTM)
CONDITION NEW
FIELD TERMINATION MODULE
Introduction
Field Termination Modules (FTM) are used to connect field wiring to the front of the MicroNet control’s I/O Modules. They connect to the subminiature D-type connectors on the front of the I/O modules and provide cage-clamp terminal connection points for field wiring. They also provide shield termination and EMI protection. All FTMs can be mounted on 35 mm DIN Rails and take the place of interposing terminal blocks to field wiring.
The cage-clamp terminals on the FTMs and relay modules accept a maximum of one #12 AWG wire or two #18 AWG wires. Field wiring hookup is performed by stripping the wire back 0.312 inches (8 mm), inserting into the cage clamp and tightening the screw.
Related introduction
• Problem
In NetCon® , MicroNet™, and MicroNet Plus control systems with multiple 2 CH Actuator modules (part numbers 5501-428, -429, -430, -431, -432), a potential exists for a ‘beat’ frequency to be created around 3000 Hz. This signal can be seen as noise within the chassis itself and has been known to cause fluctuations in low amplitude signals such as RTDs and thermocouples. It may cause increased noise on other analog signals as well. The source of the problem is that each actuator module produces a feedback (either LVDT or RVDT) excitation signal that is independent and asynchronous to the other actuator modules generating this same output. Since these signals are likely to be slightly offset in frequency and amplitude, it is possible that a corresponding beat frequency can develop on the chassis backplane and develop on the analog common line.
• Solution
In 1997, Woodward created a small DIN-rail-mountable filter that is specifically designed to eliminate noise created by the actuator excitation within a tight frequency band (notch) around 3000 Hz. The unit requires about 1 inch (25 mm) of DIN rail space under the actuator FTM, and has two wire connections. One wire is connected from TB 1 to the actuator excitation (–), which on Woodward FTM 5437-672 is terminal TB 6. The second wire is connected from TB 4 to ground.
Woodward’s engineering services group recommends the use of one Notch Filter per chassis for all chassis that utilize two or more actuator modules. In the case of a redundant system, two filters can be installed to ensure that this protection is available during all running conditions. If a control system has multiple chassis, then each chassis meeting this criterion should have a filter.
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Contact us, and we will dispatch your order as requested |
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Miya zheng |
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