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Wabtec Mors Smitt TDMB4-U200N Manual

Multi-function timer relay
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TDMB4-U200N
Multi-Function Timer Relay
Functional 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.
TDMB4-U200N v09.2 - February 2025
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
Application
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.
Page 1/18
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Summary of Contents for Wabtec Mors Smitt TDMB4-U200N

  • Page 1 TDMB4-U200N Multi-Function Timer Relay 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 •...

  • Page 2: Connection Diagram

    Connection diagram 1-2: Supply voltage 5: Command voltage The negative of the Command voltage is common with the supply voltage. Certain functions require Command voltage to guarantee operation of the time delay. There are two possibilities for activating the relay: •...
  • Page 3 Multi Function Timer Relay TDMB4-U200N Sockets Mounting Surface / Wall 35 mm rail Panel / Flush Screw Screw - wide terminals V22 BR V23 BR Spring clamp Faston Solder tag Crimp Contact characteristics Parameter Value Contact configuration 3 C/O + 1 WC Peak inrush current (NF F 62-002) 200 A (withstand >...
  • Page 4 Multi Function Timer Relay TDMB4-U200N Coil data Nominal Voltages DC: 24, 36, 48, 72, 96, 110, 125, 145, 220 AC: 25, 96, 110, 120, 220, 230, 240 0.7 - 1.25 U nom Operating Voltage < 0.875 W (220 V) Nominal power consumption During time delay <...

  • Page 5: Electrical Characteristics

    Multi-Function Timer Relay TDMB4-U200N Contact characteristics Contact reliability according to IEC 60947-5-4 Mean number of operating Contact switching load Contact material Failure rate λ cycles to contact failure m 1 mA, 5 VDC resistive Gold (option E) 5x10 20.000.000 Gold (option E) 4x10 25.000.000 5 mA, 24 VDC resistive...

  • Page 6: Environmental Characteristics

    Multi-Function Timer Relay TDMB4-U200N Environmental characteristics Vibration IEC 61373, Category I, Class B, Body mounted Shock IEC 61373, Category I, Class B, Body mounted Operating temperature C...+70 Operating temperature class Humidity 2000 meter. Higher altitudes are possible but have consequences Maximum altitude mentioned in IEC 60664 (for example 5000 meter with bigger clearance distance)
  • Page 7 Multi-Function Timer Relay TDMB4-U200N OPTIONS Cannot be Code Description Remark combined with Au; Gold plated contacts E ⃰ Extra dust protection IP50 Cat 2 for the relays mounted in a Mors Smitt socket. Application PD1/PD2 and contact load > 0.5 A. Double zener diode over coil Maximum allowed peak voltage 180 V, higher voltage will damage the diode.
  • Page 8 Multi-Function Timer Relay TDMB4-U200N Electrical life expectancy By connecting 2 contacts in series the DC current breaking capacity is increased by 50 %. Electrical lifetime is tested under laboratory conditions with switching frequency 0.33 Hz. Note: The actual electrical lifetime in the application is affected by the switching frequency, type of contact (N/O or N/C), environmental conditions, etc. For highly inductive loads Mors Smitt A400/B400 relays with standard double make double break contacts are the optimal solution.
  • Page 9 Multi-Function Timer Relay TDMB4-U200N Mounting possibilities/sockets Surface wall mounting 338000302 V22BR Screw socket, wall mount, front connection (9 mm terminals) 338000580 Screw socket, wall mount, front connection (7.5 mm terminals) 338000610 Spring clamp socket, wall mount, front dual connection (2.5 mm Rail mounting 338000580 Screw socket, wall mount, front connection (7.5 mm terminals)
  • Page 10 Multi-Function Timer Relay TDMB4-U200N Mechanical keying relay and socket (optional) Function: • To prevent wrong installation • To prevent damage to equipment • To prevent unsafe situations Using keyed relays and sockets prevents a relay is inserted in a wrong socket. For example, it prevents that a 24 VDC relay is put in a 110 VDC circuit.
  • Page 11 Multi-Function Timer Relay TDMB4-U200N Important for relay selection and operation Make sure the relay is suitable for the application. For critical applications (for example: green loop applications) relays should be checked for proper operation during periodic inspection. Contact switching current Each relay has a range of switching currents in which it performs optimally: the sweet spot.

  • Page 12: Selector Switches

    Multi-Function Timer Relay TDMB4-U200N Selector switches The function and switching time are adjustable via four rotary-switches on the relay’s front panel, each with ten positions. The user can select the time delay settings between 100ms and 99h. The position of the arrow point on each rotary switch indicates the selected number. Function selection: S1 Timing selection: S2, S3, S4 Note: Discrete, incremental adjustments are employed, precluding the availability of intermediate positions.
  • Page 13 Multi-Function Timer Relay TDMB4-U200N Timing selection To adjust the switching time (except F5): • Select the necessary range using S2. • Select the appropriate switching time value using S3 & S4. • The final selected time will be time value * range. Ex: S2=1, S3=2, S4=5 then Time value=25[(2*10) +(5*1)] Final selected time= 25sec [25*1s]...
  • Page 14 Multi-Function Timer Relay TDMB4-U200N Functions F0-Delay on pick up F1: Acceleration on pickup timing with external command F2- Pulse when command voltage disappears F3 - Delay on drop out with command voltage F4 – Flash symmetrical F5 – Flash asymmetrical F6 - One shot with pulse prolongation on command F7 - One shot function on supply voltage with fixed pulse (3s), voltage...
  • Page 15 Multi-Function Timer Relay TDMB4-U200N Compliancy EN 50155:2017 Railway applications - Rolling stock - Electronic equipment IEC 60947-5-1:2016 Low-voltage switchgear and control gear EN 50121-3-2:2016 Railway applications - Electromagnetic compatibility Railway applications - Fire protection on railway vehicles EN 45545-2:2015 Part 2: Requirements for fire behavior of materials and components NF F16-101/102 Railway rolling stock - Fire behavior IEC 60664-1/ EN 50124-2...

  • Page 16: Installation

    Multi-Function Timer Relay TDMB4-U200N Product warnings / End user care Instructions for use Installation Before installation or working on the relay: disconnect the power supply first (no hot swapping)’ Install socket and connect wiring according to the terminal identification. Plug relay into the socket ensuring there is no gap between the bottom of relay and the socket.

  • Page 17: Operation

    Multi-Function Timer Relay TDMB4-U200N Operation After installation always apply the rated voltage to the coil to check correct operation. Long term storage may corrode the silver on the relay pins. When plugging the relay into the socket, the female bifurcated or trifurcated receivers will automatically cut through the corrosion on the pins and guarantee a reliable connection.

  • Page 18: Product Labeling

    Multi-Function Timer Relay TDMB4-U200N Ordering scheme TDMB4-U Code Coil voltages 24 VDC Cannot be combined with Options Gold plated contacts Double Zener diode (add as many options as needed, always in alphabetical order) Extra dust protection Double make / Double break contacts Special options (minimum order quantity: 20) AgSnO2 contacts, highly resistant to welding...

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