- Voltage monitoring, Datasheet timer delay-on /-off, 4 pole Features Description Plug-in electronic voltage monitoring relay with optional delay-on and delay-off timer function and four change-over contacts. The delay time is adjustable with a lockable knob (either delay-on or delay-off, the other delay is fixed). The relay can also be supplied with fixed time delays (no knob). The pull-in voltage and drop-out voltage are both adjustable via internal screws. The relay can also be supplied with a fixed pull-in and drop-out voltage. Suitable for monitoring DC voltages. The MTDV4 offers a very small hysteresis (difference between pull-in and drop-out voltage). The relay is equipped with a LED which indicates the status of the relay contacts. Delay-off function for voltage drop up to 50% nominal voltage, no auxiliary supply necessary. Magnetic arc blow-out for high breaking capacity and long contact life optional. Also optional feature to keep relay pulled-in for minimal 00 ms during power loss. DC voltage monitoring relay with time delay Compact plug-in design 4 C/O contacts Pull-in and drop-out voltage adjustable via internal screws Also available with fixed pull-in and drop-out voltage (no internal screws) Very small hysteresis possible Time delay on pull-in and/or drop-out delay time adjustable with a lockable knob, other delay time fixed Also available with fixed time delays (no knob) Time delay range: 0...60 s No auxiliary supply necessary LED for status indication Flat, square and silver plated relay pins for excellent socket connection Integrated snap lock Optional positive mechanical keying relay to socket Industry compliancy IEC 60947 Low voltage switch gear and control gear IEC 60947-5- Electromechanical control circuit devices and switching elements IEC 60255 Relay design and environmental conditions EMC Directive CE The construction of the relay and choice of materials makes the MTDV4 relay suitable to withstand low and high temperatures, shock & vibrating and dry to humid environments. No external retaining clip needed as integrated snap-lock will hold relay into socket under all circumstances and mounting directions. Application These relays are designed for demanding industrial applications. The MTDV4 relay is used in applications for voltage monitoring with or without time delay(s).
Functional and connection diagrams Timing diagram Relay pin correspondence 3 4 2 9 0 7 8 5 6 3 4 2 Connection diagram Example with adjustable voltage and adjustable delay-on 2
Voltage characteristics Voltage settings Minimal hysteresis Accuracy set required value Accuracy repeatability Pull-in and drop-out both adjustable, or both fixed value 2 % x Upull-in Max. ± 0.25 % deviation of set value After adjusting / fixed time setting: no variation in setpoint Max ± 0.5 % deviation Accuracy temperature variation Max. ± 0.02 % / degree (compared to 20 C) Example Fixed pull-in voltage: 0.0 VDC Adjustable release voltage: after measuring set on 03.0 VDC Pull-in voltage will be between 09.7...0.3 VDC. For example: 0.0 VDC The ambient temperature is 40 degrees Celsius which is 20 degrees different compared to the standard 20 degrees Celsius. This results in 0.4 % extra voltage variation. The total maximum voltage variation is then 0.5 % (due to repeatability) + 0.4 % (due to temperature) = 0.9 %. In this case every pull-in voltage will be between 09.0 and.0 VDC, and every release voltage will be between 02. and 03.9 VDC Coil characteristics Type Unom (VDC) Uadjust.min (VDC) Uadjust.max (VDC) Power consumption (W) (monitoring, relay switched off), typical value @ Umin Power consumption (W) (relay switched on) typical value @ Unom 24 VDC 24 9.2 30 0. 2.0 36 VDC 36 28.8 45 0. 2.3 48 VDC 48 38.4 60 0.2 2.4 60 VDC 60 48.0 75 0.2 2.7 72 VDC 72 57.6 90 0.3 2.5 96 VDC 96 76.8 20 0.4 2.8 0 VDC 0 88 37.5 0.5 2.9 25 VDC 25 00 56 0.5 3. 60 VDC 60 28 200 0.7 3.3 220 VDC 220 76 275.0 3.5 Other types on request. Remark: maximum adjustable voltage is also the maximum allowable voltage, otherwise the relay can be damaged. 3
Time delay specifications Time delay function Available time ranges Fixed Adjustable (xx) Delay on pull-in and/or delay on drop-out Any value between 0...60 s 0...3 s 0...6 s 0...0 s 0...30 s 0...60 s Accuracy - set required value Fixed time delay Max. ± 0.5 % deviation of set value Adjustable time delay Max. ± 0 % deviation of full scale After adjusting / fixed time setting: no variation in setpoint Accuracy - repeatability Max ± 0.5 % deviation Accuracy temperature variation Max. ± 0.02 % / degree (compared to 20 C) Accuracy voltage variation Max ± 0.05 % / % Unom Operating times at nominal voltage without time delay: Pull-in time < 75 ms (increasing voltage) Release time < 200 ms (voltage switched from 0 to Umax) < 75 ms (decreasing voltage) < 50 ms (voltage switched from Umax to 0) Remarks: - Delay on pull-in: Relay only pulls-in when voltage doesn t drop below pull-in voltage during delay time - Delay on drop-out: Relay only drops-out when voltage keeps below drop-out voltage during delay time, when voltage drops below 50% x Unom, relay will drop-out immediately without time delay - Adjustable-fixed time delays: Either delay-on or delay-off can be adjustable, not both at the same time Example Unom: 0 VDC Delay-on: adjustable 0 3 s Delay-off: fixed on.2 s Delay-on: time delay set on 2 s : delay will be between.7 s...2.3 s. For example: 2.0 s. The ambient temperature is 40 degrees Celsius which is 20 degrees different compared to the standard 20 degrees Celsius. This results in 0.4 % extra time variation. The applied voltage is 77 VDC which is 30% different compared to the nominal voltage. This results in.5 % extra time variation. The total maximum time variation is then 0.5 % (repeatability) + 0.4 % (temperature variation) +.5 % (voltage variation) = 2.4 %. In this case every pull-in delay will be between.95 and 2.05 s. Delay-off: fixed on.2 s : delay will be between.4 s...26 s. For example:.20 s. The ambient temperature is 40 degrees Celsius which is 20 degrees different compared to the standard 20 degrees Celsius. This results in 0.4 % extra time variation. The applied voltage is 77 VDC which is 30% different compared to the nominal voltage. This results in.5 % extra time variation. The total maximum time variation is then 0.5 % (due to repeatability) + 0.4 % (due to temperature) +.5 % (due to voltage) = 2.4 %. In this case every drop-out delay will be between.7 and.23 s. 4
Contact characteristics Amount and type of contacts 4 C/O Maximum make current 6 A Peak inrush current 200 A (withstand > 0 x 200 A @ 0 ms, min) Maximum continuous current 0 A (AC ; IEC 60947) Maximum switching voltage 250 VDC, 440 VAC Minimum switching voltage 2 V Minimum switching current 0 ma Maximum breaking capacity 0 VDC, 8 A (L/R 5 ms) 230 VAC, 0 A (cos j 0.7) Contact resistance Material Note Contact : contacts gap cannot have a different position (Forced 0.7 contacts, mm Weld-no-transfer) Contact force > 200 mn Electrical characteristics Dielectric strength Pole-pole IEC 60255-5 4 kv, 50 Hz, min Cont-coil IEC 60077 2 kv, 50 Hz, min Pulse withstanding IEC 60255-5 5 kv (.2/50 μs) Insulation between open contacts 2.5 kv; 50 Hz; min EMC EN 502-3-2 compliant Mechanical characteristics 5 mω (initial) Ag standard (optional AgSnO 2, Au on Ag) Mechanical life Maximum switching frequency Maximum torque value screw to lock knob Weight 30 x 0 6 operations Mechanical: 3600 ops/h Electrical: 200 ops/h 0.5 Nm 90 g (with adjustable knob) 5
Environmental characteristics Environmental Vibration IEC 6373, Category I, Class B, Body mounted Shock IEC 6373, Category I, Class B, Body mounted Operating temperature -25 C...+50 C (with option C : -40 o C) Humidity 93% Salt mist IEC 60068-2-, class 4 Damp heat IEC 60068-2-30, Test method Db variant Protection IEC 60529, IP40 (relay on socket) Fire & smoke NF F 6-0, NF F6-02, EN 45545-2 Insulation materials Cover: polycarbonate Base: polyester Dimensions (mm) 6
Options Code Description Remark Cannot be combined with: B Magnetic arc blow-out Ensures a high DC breaking capacity and longer contact life. C Low temperature (-40 C) Icontact < 8 A E* Au; Gold plated contacts (0 μm) M K Extra dust protection Only for fixed time setting M AgSnO 2 : non-weldable contacts F contact > 00 ma E Q Double zener diode Y Double make/double break contacts 2 C/O DM/DB, -40 o C Keying Coil coding relay and socket Colour coding Coloured cover for coil voltage coding * Gold plated contacts characteristics Material Maximum switching voltage Maximum switching current Minimum switching voltage Minimum switching current Ag, 0 µm gold plated 60 V (higher voltages may be possible, contact Mors Smitt for more information) 400 ma (at higher rate gold will evaporate, then the standard silver contact rating of minimum 0 ma and 2 V is valid) 5 V ma 7
AC Current breaking capacity at cosφ = AC Current breaking capacity versus life expectancy in millions of cycles. Rate of contacts opening and closing = 200 operations per hour. Curves shown for resistive load (Power Factor = ). Curve 2 3 4 VAC 220 25 48 24 AC Current breaking capacity 00.00 Millions of cycles 0.00 3 2 4.00 0.0 0. Amps 0 Remark: Relay with magnetic arc blow-out. 8
AC Current breaking capacity at cosφ = 0.7 ; 0.5 ; 0.3 AC Current breaking capacity versus life expectancy in millions of cycles. Rate of contacts opening and closing = 200 operations per hour. Values shown for inductive loads - Cos Ø = 0.7 Cos Ø = 0.5 Cos Ø = 0.3 Curves 3 5 6 7 8 9 2 VAC 24 24 25 220 24 25 220 25 220 Cos Ø 0.7 0.5 0.7 0.7 0.3 0.5 0.5 0.3 0.3 00.000 AC Current breaking capacity 0.000 Millions of cycles.000 0.00 3 5 6 7 8 9 2 0.00 0. Remark: Relay with magnetic arc blow-out. Amps 0 9
DC Current breaking capacity at L/R = 0 DC Current breaking capacity versus life expectancy in millions of cycles. Rate of contacts opening and closing = 200 operations per hour. Curves shown for resistive load (L/R = 0). Continuous current. * By connecting 2 contacts in series, we increase the DC current breaking capacity by 50 % Curve 2 3 4 VDC 220 25 48 24 DC Current breaking capacity 00.00 Millions of cycles 0.00.00 3 2 4 0.0 0. Amps 0 Remark: Relay with magnetic arc blow-out. 0
DC Current breaking capacity L/R = 20 ms ; 40 ms DC Current breaking capacity versus life expectancy in millions of cycles. Rate of contacts opening and closing = 200 operations per hour. Curves shown for inductive load - L/R = 20 ms continuous current L/R = 40 ms continuous current * By connecting 2 contacts in series, we increase the DC current breaking capacity by 50 % Curves 2 3 4 5 6 7 8 VDC 24 48 24 25 220 48 25 220 L/R (ms) 20 20 40 20 20 40 40 40 DC Current breaking capacity 00 0 Millions of cycles 0. 0.0 2 3 4 5 6 0.00 0. Remark: Relay with magnetic arc blow-out. Amps 7 8 0
Sockets Mounting possibilities/sockets V3 V22 BR V23 V23BR V26 V29 V3 V32 V33 Surface/wall mounting 338000302 338000580 33800060 Rail mounting 338000580 338000402 33800060 V22BR V23 V29 V23 V23BR V29 Screw socket, wall mount, front connection (9 mm terminals) Screw socket, wall mount, front connection (7.5 mm terminals) Spring clamp socket, wall mount, front dual connection (2.5 mm 2 ) Screw socket, rail mount, front connection (7.5 mm terminals) Screw socket, rail mount, front connection (9 mm terminals) Spring clamp socket, rail mount, front dual connection (2.5 mm 2 ) Panel/flush mounting 3380000 32840000 338000560 338000570 PCB mounting V3 V26 V3 V33 Solder tag socket, panel mount, rear connection Crimp contact socket, panel mount, rear connection, A260 crimp contact Faston connection socket, rear dual connection (6.3 mm) Spring clamp socket, flush mount, rear dual connection (2.5 mm 2 ) 33800056 V32 PCB soldering socket For more details see datasheets of the sockets 2
8 Positions of placement possible 8 Positions of placement possible 8 Positions of placement possible 9 7 5 3 8 6 4 8 Positions of placement possible MTDV4 relay Keying 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 0 VDC circuit. Positive discrimination is possible per different function, coil voltage, timing, monitoring, safety and non-safety. The D relay socket keying option gives 8 x 8 = 64 possibilities. Upon ordering the customer simply indicates the need for the optional keying. Mors Smitt will assign a code to the relay and fix the pins into the relay. The sockets are supplied with loose key receptacles. Inserting the keys into the socket is very simple and self explaining. Remark: Sockets and relay shown are only examples. Top view socket Bottom view relay 4 2 0 8 6 4 2 key receptacle B H D F E S T Z V X key receptacle keying pin F D G C H B 0 2 X V Y U Z T keying pin 3 5 7 9 3 Left Right Left Right B C D T U V H G F Z Y X A E S W A E S W H G F Z Y X B C D T U V Example keying position G-Z on socket Example keying position G-Z on relay 3
Instructions Installation, operation & inspection Installation Before installation or working on the relay: disconnect the power supply first! 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. Reverse installation into the socket is not possible due to the mechanical blocking snap-lock feature. Check to ensure that the coil connection polarity is not reversed. Relays can be mounted tightly together to save space. When rail mounting is used, always mount the socket in the direction of the UP arrow, to have proper fixation of the socket on the rail. Warning! - Never use silicon in the proximity of the relays. - Do not use the relay in the presence of flammable gas as the arc generated from switching could cause ignition. - To remove relays from the socket, employ up and down lever movements. Sideway movement may cause damage to the coil wires. 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. Before actual use of relays, it is advised to switch the load several times with the contacts. The contacts will both be electrically and mechanically cleaned due to the positive wiping action. Sometimes a contact can build up increased contact resistance (< 5 mw when new). When using silver contacts one can clean the contact by switching a contact load a few times using >24 VDC & ~2 A. Increased contact resistance is not always problematic, as it depends on circuit conditions. In general a contact resistance of Ω is no problem, consult Mors Smitt for more information. Condensation in the relay is possible when the coil is energised (warm) and the outside, environmental temperature is cold. This is a normal phenomenon and will not affect the function of the relay. Materials in the relay have no hygroscopic properties. Inspection Correct operation of the relay can easily be checked as the transparent cover provides good visibility of the moving contacts. If the relay does not seem to operate correctly, check for presence of the appropriate coil voltage and polarity using a suitable multimeter. If a LED is fitted, it indicates voltage presence to the coil. If coil voltage is present, but the relay does not operate, a short circuit of the suppression diode is possible (This may be due to the coil connection having been reversed). If the relay doesn t work after inspection, replace the relay unit with a similar model. Do not attempt to open the relay cover or try to repair. Contacts are calibrated and in balance, touching can affect proper operation. Also re soldering may affect correct operation. Since 2009 relays have tamper proof seals fitted and once broken, warranty is void. Most relay defects are caused by installation faults such as over voltage, spikes/transients, high/short current far exceeding the relay specifications. When returning the relays for investigation, please provide all information on the RMA form. Send defective relays back to the manufacturer for repair or replacement. Normal wear and tear or external causes are excluded from warranty. 4
Ordering scheme Configuration: MTDV4-24 - E 0-0 s / 0.5 s 9.2-30 VDC. Relay model 2. Coil voltage 3. Options 4. Time range 5. Voltage range This example represents a MTDV4-24-E 0-0 s/0.5 s 9.2-30 VDC Description:MTDV4-, Unom: 24 VDC, gold contacts, pull-in time 0...0 s adjustable, drop-out time fixed at 0.5 s, adjustable voltage range 9.2...30 VDC. Relay model MTDV4 2. Coil voltages 24 VDC 36 VDC 48 VDC 60 VDC 72 VDC 96 VDC 0 VDC 25 VDC 60 VDC 220 VDC 4. Time ranges delay-on/delay-off 0...3 s 0...6 s 0...0 s 0...30 s 0...60 s or fixed (no knob) Remark: for standard applications delay-on and delayoff times minimal 0.5 s is recommended to avoid unwanted switching due to short voltage variations. 3. Options B Magnetic arc blow-out C Low temp. (-40 o C) - Max. contact current 8 A E Gold plated contacts K Special dust protection (only for fixed time setting) M AgSnO 2 contacts, high resistant to welding Q Double zener diode Y Double make/double break ( -40 o C) Upon ordering indicate keying if necessary. 5. Voltage range drop-out/pull-in voltage 9.2...30 VDC 28.8...45 VDC 38.4...60 VDC 48.0...75 VDC 57.6...90 VDC 76.8...20 VDC 88...37.5 VDC 00.0...56 VDC 28.0...200 VDC 76.0...275 VDC or fixed 5
DS-MTDV4 IND V.3 April 207 Mors Smitt France SAS 2 Rue de la Mandinière 72300 Sablé-sur-Sarthe, France Tel: +33 (0) 243 92 82 00 F +33 (0)243 92 82 8 E sales.msf@wabtec.com Mors Smitt Asia Ltd. 29/F., Fun Towers, 35 Hung To Road Kwun Tong, Kowloon, HONG KONG SAR T +852 2343 5555, F +852 2343 6555 E sales.msa@wabtec.com Mors Smitt B.V. Vrieslantlaan 6, 3526 AA Utrecht, NETHERLANDS T +3 (0)30 288 3 E sales.msbv@wabtec.com Mors Smitt Technologies Inc. 00 Johnson Drive, Buffalo Grove, IL 60089-698, USA T + 847 777 6497, F + 847 520 2222 E salesmst@wabtec.com Mors Smitt UK Ltd. Graycar Business Park, Barton under Needwood, Burton on Trent, Staffordshire, DE3 8EN, UK T +44 (0)283 722650 E sales.msuk@wabtec.com RMS Mors Smitt 6 Anzed Court, Mulgrave, VIC 370, AUSTRALIA T +6 (0)3 8544 200 F +6 (0)3 8544 20 E sales.rms@wabtec.com (c) Copyright 207 All rights reserved. Nothing from this edition may be multiplied, or made public in any form or manner, either electronically, mechanically, by photocopying, recording, or in any manner, without prior written consent from Mors Smitt. This also applies to accompanying drawings and diagrams. Due to a policy of continuous development Mors Smitt reserves the right to alter the equipment specification and description outlined in this datasheet without prior notice and no part of this publication shall be deemed to be part of any contract for the equipment unless specifically referred to as an inclusion within such contract. Mors Smitt does not warrant that any of the information contained herein is complete, accurate, free from potential errors, or fit for any particular purpose. Mors Smitt does not accept any responsibility arising from any party s use of the information in this document.