TDMB4-U200N - Multi-Function Timer Relay

Description

The TDMB4-U200N is a multi-function relay with electronic time delay, consisting of 3 change-over contacts, and 1 Normally closed contact, for reliable switching of very low currents (1mA @5 VDC) up to currents of 10A @ 110VDC.
A single TDMB4-U200N relay offers 10 different timer functions, freely programmable by the user. The switching time can be selected within a wide range extending from 0.1 seconds to 99 hours. The timer function, the scale, and the switching time are adjustable by means of 4 rotary switches, each having 10 positions, located on the top of the relay. The relay is equipped with two LEDs which indicate the presence of power supply and the energizing of the coil.
Built-in magnetic arc blow-out ensures adequate DC breaking capacity, resulting in long contact life. The integrated contact separation prevents cross pollution of contacts.

Apllication

Relays continue to play a vital role in reliable train operation. Key functions are galvanic isolation between control (computers/PLCs) and power circuits, providing system isolation, contact multiplication and amplification.
Other unique features are:
• Predictable failure behavior (Fail Safe) making system safety validation simpler than using computer-based solutions like PLCs.
• Long-term availability (no obsolescence).
• Easy maintenance by plug-in feature and transparent cover.
• Unlike more sensitive electronics, relays are insensitive to Electromagnetic Interference.
With these features, one can build a hardwired, fail-safe control system which is cyber secure and tolerance to electromagnetic disturbances. Relays are ideal to use in trains for signal transfer/repeating, safety interlocking functions (brake - doors), load on-off switching and sub- system isolation.

Features

• Compact plug-in relay, 10 different time delay
functions
• Wide time setting ranges from 0.1s to 99 hours
• 3 C/O contacts + 1 N/C time delayed contacts
• Led indication for power and coil energization
• High electromagnetic interference immunity
• Solid and rugged construction for heavy or intensive duty, considerable long-life
• Independent and self-cleaning contacts
• Magnetic arc blow-out ensuring long contact life
• Transparent cover
• Excellent shock and vibration resistance
• Wide range of sockets
• Continuous current: maximum 10A.
• Back EMF protection diode

Options

• Gold plated contacts
• IP50 dust protection
• AgSnO2 contacts, weld resistant for capacitive loads
• Double Zener diode
• Double make/double break contacts
• AC/DC coil
• Keying (coding relay to correct socket)
Remark: Not all combinations are simultaneously possible