MK 7850N.82/200 AC/DC12-240V - DOLD & SOEHNE

Time control technique

Multifunction relay MK 7850N/200

multitimer

All technical data in this list relate to the state at the moment of edition. We reserve the right

for technical improvements and changes at any time. MK 7850N/200 / 11.09.06 e

Approvals and marking

Application

Time-dependent controllers

Indicators

green LED: on when voltage connected

yellow LED "R/t": shows status of output relay and time

delay:

-Continuously off: output relay not active;

no time delay

-Continuously on: output relay active;

no time delay

-Flashing (short on, long off) output relay not active;

time delay

-Flashing (long on, short off) output relay active;

time delay

A 0239280

* see variants

Canada / USA

•According to IEC/EN 61 812-1

•8 functions settable via rotational switch:

- Delay on energisation (AV)

- Fleeting on make (EW)

- Delayed pulse (IE)

- Flasher, start with pulse (BI)

- Delay on de-energisation (RV)

- Pulse forming function (IF)

- Fleeting on break (AW)

- Delay on energisation and de-energisation (AV / RV)

•8 time ranges from 0,02 s to 300 h selectable via rotational switches

•Voltage range AC/DC 12 ... 240 V

•With time interruption / time adding input for all functions

•Adjustment aid for quick setting of long time values

•Suitable for 2-wire proximity sensor control

•2 changeover contacts, one programmable as instantaneous contact

•LED indicators for operation, contact position and time delay

•Wire connection: also 2 x 1.5 mm2 stranded ferruled, or

2 x 2.5 mm2 solid DIN 46 228-1/-2/-3/-4

•as option with plugable terminal blocks for easy exchange

of devices

- with screw terminals

- or with cage clamp terminals

•22,5 mm width

MK 7850N/500: as MK 7850N/200 but with

•2 additional functions:

- Cyclic timer, start with break (TP)

- Fleeting on make and break (EW / AW)

•second time setting t2 for functions

- Cyclic timer, start with pulse (TI) or break (TP), based on the

separate setting of pulse and break time the flasher function

can be used as cyclic timer

- Fleeting on make and break (EW/AW)

- Delay on energisation and de-energisation (AV / RV)

- Delay pulse (IE) and setting of pulse length

•Connection facility for 2 external potentiometers

Now with selectable

Plugin technology

MK 7850N/200

MK _ _ _ _N P_

Terminal block

with cage clamp terminals

(PC / plugin cageclamp)

Terminal block

with screw terminals

(PS / plugin screw)

Notes

Removing the terminal blocks with cage clamp terminals

1. The unit has to be disconnected.

2. Insert a screwdriver in the side recess of the front plate.

3. Turn the screwdriver to the right and left.

4. Please note that the terminal blocks can only be mounted on the

belonging plug in terminations.

Options with plugable terminal blocks

Function diagram

A1-A2

USt

B1-A2

USt

B1-A2

position function switch

AV/RV

15-16

15-18

t=ta+tb+tc

tbtctd

tetf

tt t

M8290

0,5s

0,5s + td

t=te+t

Function diagram

A1-A2

USt

B1-A2

USt

B1-A2

S1: A*

S1: B*

S1: A*

S1: B*

S1: A*

EW/AW

S1: B*

AV/RV

*) A and B indicate the position of function slide switch S1

15-16

15-18

t1=ta+tb+tc

t2=ta+tb+tg

t2=te+tf

t1=th+ti

tbtctd

t1t1

M8291

t1t1

0,5s

0,5s+t

position function switch

MK 7850N/200

 ...  = position of function switch

AV = Delay on energisation

EW = Fleeting on make

IE = Delayed pulse

BI = Flasher,

start with pulse

RV = Delay on de-energisation

IF = Pulse forming function

AW = Fleeting on break

AV/RV = Delay on energisation and

de-energisation

MK 7850N/500

...  = position of function switch

AV = Delay on energisation

EW = Fleeting on make

IE = Delayed pulse

S1 in positon A:

t1: adjustable, t2 = 0,5 s fixed

S1 in position B:

t1 and t2 adjustable

TI = Cyclic timer,

start with pulse

S1 in position A

TP = Cyclic timer,

start with break

S1 in position B









RV = Delay on de-energisation

IF = Pulse forming function

AW = Fleeting on break

S1 in position A

EW/AW = Fleeting on make

and break

S1 in position B

AV/RV = Delay on energisation

and de-energisation

























M8302_a

green LED

on when voltage

connected

slide switch S1

(only with MK7850N/500)

yellow LED

function see

indicators

range selector switch

function setting

time setting t1

time setting t2

(only with MK7850N/500)

Notes

Control of A1-A2 with proximity sensors

The input can be controlled by DC 3 wire or AC/DC 2 wire proximity

sensors. For operating voltage > 24 V and usage of sensors without

built-in short circuit protection a protection resistor on A1 is

recommendend to reduce the inrush current. The dimension is as

follows:

Rv ≈ operating voltage / max. switching current of sensor

The series resistor must not be selected higher than necessary.

Max. values are:

Operating voltage: 48 V 60 V 110 V 230 V

Series resistor Rv max: 270 Ω390 Ω680 Ω1,8 kΩ (1 W)

Instantaneous contact

By external wire links the output function of the device can be altered

from 2 delayed contacts to 1 delayed and 1 instantaneous contact.

The instantaneous contact switches when the operating voltage is

connected. To terminals X1 and X2 no other voltage potentials must

be connected, as the unit might be damaged.

Adjustment assistance

The flashing period of the yellow LED is 1 s ± 4 % and can be used to

adjust the time. Especially on the lower end of scale and for long times

it is suitable as the multiplication factors between the different time

ranges are exact without tolerance.

Example:

The required time is 40 min. It has to be adjusted within range

3 ... 300 min.The time check takes too long as several timing cycles

would be necessary for a precise value. For faster adjustment the

setting is made to 0.03 ... 3 min. On this range the potentiometer should

be set to 0.4 min (= 24 sec.). With the right potentiometer setting the

LED must show 24 flashing cycles. After that the time range is switched

over to

3 ... 300 min. and the setting is complete.

Time interruption / time adding with B1

With the functions AV, EW, IE and BI the time delay can be interrupted

by controlling input B1 (+) with control voltage. Removing the control

signal will continue the timing cycle (time addition).

Setting

Notes

Control input B1

The functions RV, IF, AW, AV / RV have to be controlled via input B1

(+) with voltage against A2. The control signal could be the same as

the auxiliary/control voltage of A1 or any other voltage between 12 and

240 V AC or DC. Operating a parallel load between B1 and A2 is also

possible.

If with function IF the inputs A1 and B1 are controlled simultaneously

a pulse with the adjusted length is started. With the variant MK7850N/

500 the output pulse can be disabled by setting the slide switch in

Position "B".

Time interruption and time addition with X3

On all functions, also with RV,IF, AW (EW/AW) and AB/RV the time

delay can be interrupted during timing by bridging the terminals

X2 - X3. By opening the bridge the time continues (time addition).

While X2 and X3 are bridged the control input is disabled and the yellow

LED remains in the state it had at stop. No external voltage must be

connected to X2 and X3 as the unit may be damaged.

Remote potentiometers

Both settings on variant MK 7850N/500 can also be made by remote

potentiometers of 10 kOhms:

- terminals Z1 - Z2: potentiometer for time t1

- terminals Z2 - Z3: potentiometer for time t2

When connecting a remote potentiometer the corresponding

potentiometer has to be set to min. If no remote potentiometers are

required the terminals Z1-Z2 resp. Z2-Z3 have to be linked.

The wires to the remote potentiometers should be installed separately

from the lines with mains voltage. If this is not possible, a screened

cable is recommendet where the shield is connected to Z2.

To terminals Z1, Z2 and Z3 no external voltage must be connected,

as the unit might be damaged.

Additional function

With the variant MK7850N/500 additional features can be selected for

the functions position 3, 4 and 7 using the slide switch S1 on the relay

front in position "B". At the same time a second time setting t2 is

available on the lower potentiometer (see function diagram) the time

range is the same as for t1.

Circuit diagrams

(+)

X1 X2

M8100_a

A1 B1

16 18

22 28

(+)

X1 X2

Z1 Z2 Z3

M8101_a

A1 B1 Z1

Z1 t1

A2 Z2 Z3

16 18

22 28

MK 7850N.82/200

MK 7850N.82/500

(+)

X1 X2

Z1 Z2

M8676_a

A1 B1 Z1

Z1 tZ2

A2 Z2

16 18

22 28

MK 7850N.82/300

Technical data

Time circuit

Time ranges: 8 time ranges in one unit, settable

via rotational switch

0.02 ... 1 s 0.3 ... 30 min

0.06 ... 6 s 3 ... 300 min

0.3 ... 30 s 0.3 ... 30 h

0.03 ... 3 min 3 ... 300 h

Time setting t1, t2: continuous, 1:100 on relative scale

(t2 only at MK 7850N/500)

Recovery time:

at DC 24 V: approx. 15 ms

at DC 240 V: approx. 50 ms

at AC 230 V: approx. 80 ms

Repeat accuracy: ± 0.5 % of selected

end of scale value + 20 ms

Voltage and

temperature influence: < 1 % with the complete

operating range

Input

Nominal voltage UN:AC/DC 12 ... 240 V

Voltage range: 0.8 ... 1.1 UN

Release voltage (A1/A2)

Delayed contact

AC 50 Hz: approx. 7,5 V

DC: approx. 7 V

Instantaneous contact

AC 50 Hz: approx. 3 V

DC: approx. 3.3 V

Max. permitted residual

current with 2-wire proximity

sensor control (A1-A2)

up to AC/DC 150 V: AC resp. DC 5 mA

up to AC/DC 264 V: AC resp. DC 3 mA

Control current B1: approx. 1mA, over complete voltage range

Min. on/off time of

control input B1(+):

AC 50 Hz: approx. 15 ms / ca. 60 ms

DC: approx. 5 ms / ca. 60 ms

Release voltage (B1/A2)

AC 50 Hz: approx. 3.5 V

DC: approx. 3 V

Nominal power consumption

AC 12 V: approx. 1.5 VA

AC 24 V: approx. 2 VA

AC 240 V: approx. 3 VA

DC 12 V: approx. 1 W

DC 24 V: approx. 1 W

DC 240 V: approx. 1 W

Nominal frequency: 45 ... 400 Hz

Output

Contacts

MK 7850N.82: 2 changeover contacts, one

programmable as instantaneous

contact:

without bridge X1-X2: 25-26-28 delayed changeover contact

with bridge X1-X2: 21-22-24 instantaneous contact at

UN on A1-A2

Thermal current Ith:2 x 4 A

Switching capacity

to AC 15

NO contact: 3 A / AC 230 V IEC/EN 60 947-5-1

NC contact: 1 A / AC 230 V IEC/EN 60 947-5-1

to DC 13: 1 A / DC 24 V IEC/EN 60 947-5-1

Electrical life IEC/EN 60 947-5-1

to AC 15 at 1 A, AC 230 V: 1,5 x 105 switching cycles

Short circuit strength

max. fuse rating: 4 A gL IEC/EN 60 947-5-1

Mechanical life: ≥ 30 x 106 switching cycles

General data

Operating mode: Continuous operation

Temperature range: - 40 ... + 60 °C

Clearance and creepage

distances

overvoltage category / 4 kV / 3 IEC 60 664-1

contamination level: (4 kV / 2 at MK 7850N.82/61)

EMC

Electrostatic discharge: 8 kV (air) IEC/EN 61 000-4-2

HF-irradiation: 30 V / m IEC/EN 61 000-4-3

Fast transients: 2 kV IEC/EN 61 000-4-4

Surge voltages

between

wires for power supply: 2 kV IEC/EN 61 000-4-5

between wire and ground: 4 kV IEC/EN 61 000-4-5

HF-wire guided: 10 V IEC/EN 61 000-4-6

Interference suppression: Limit value class B EN 55 011

Degree of protection

Housing: IP 40 IEC/EN 60 529

Terminals: IP 20 IEC/EN 60 529

Housing: Thermoplastic with V0 behaviour

according to UL subject 94

Vibration resistance: Amplitude 0,35 mm,

frequency 10 ... 55 Hz,IEC/EN 60 068-2-6

Climate resistance: 40 / 060 / 04 IEC/EN 60 068-1

Terminal designation: EN 50 005

Wire connection DIN 46 228-1/-2/-3/-4

Screw terminals

(integrated): 1 x 4 mm2 solid or

1 x 2.5 mm2 stranded ferruled or

2 x 1.5 mm2 stranded ferruled or

2 x 2.5 mm2 solid

Insulation of wires

or sleeve length: 8 mm

Plugin with screw terminals

max. cross section

for connection: 1 x 2.5 mm2 solid or

1 x 2.5 mm2 stranded ferruled

Insulation of wires

or sleeve length: 8 mm

Plugin with cage

clamp terminals

max. cross section

for connection: 1 x 4 mm2 solid or

1 x 2.5 mm2 stranded ferruled

min. cross section

for connection: 0.5 mm2

Insulation of wires

or sleeve length: 12 ±0.5 mm

Wire fixing: Plus-minus terminal screws M 3.5

box terminals with wire protection or

cage clamp terminals

Wire fixing: Box terminals with wire protection

Mounting: DIN rail IEC/EN 60 715

Weight: approx. 150 g

Dimensions

Width x heigth x depth

MK 7850N/200: 22.5 x 90 x 97 mm

MK 7850N/200 PC: 22.5 x 111 x 97 mm

MK 7850N/200 PS: 22.5 x 104 x 97 mm

Technical data

Connection examples

M5794

MK7850N

L(+)

AC/DC12...240V

N(-)

A1 X2

S2 B1(+)

voltfree

control contact

(stop function)

M8127

MK7850N

S1 S2

L(+)

N(-)

B1(+)

Control with parallel connected load

Connection with 2 different control voltages.

M8292

MK7850N

L(+)

N(-)

B1(+)

DC24V

AC/DC12...240V

e.g. PLC

semi-

conductor

output

Accessories

AD 3: External potentiometer 10 kΩ

The external potentiometer is used for

remote setting of the time delay. The

internal potentiometer of the timer must

be set to min. time delay.

Degree of protection

front side: IP 60

MK 7850N.82/200 AC/DC 12 ... 240 V

Article number: 0054050

•Output: 2 changeover contacts, one

programmable as instantaneous

contact

•Nominal voltage UN: AC/DC 12 ... 240 V

•Time ranges: from 0.02 s ... 300 h

•Width: 22.5 mm

Standardtype

MK 7850N.82/61: With UL-approval (Canada/USA)

MK 7850N.82/500: With 2 additional functions selectable via slide

switch S1:

- Cyclic timer, start with break (TP)

- Fleeting on make and break (EW/AW)

second time setting t2, connection facility

for 2 remote potentiometers 10 kΩ to adjust

t1 and t2

MK7850.82/300: connection facility for 1 remote potentiometer

10 kΩ

Ordering example for variant

MK 7850N .82 PS /_ _ _ AC/DC 12 ... 240 V

Nominal voltage

Variant

Type of terminals

without indication:

terminal blocks fixed,

with screw terminals

PC (plugin cage clamp):

plugable terminal

blocks with cage

clamp terminals

PS (plugin screw):

plugable terminal

blocks with screw

terminals

Contacts

Type

Variants

E. DOLD & SÖHNE KG • D-78114 Furtwangen

e-mail dold-relays

@dold.com • internet http://www.dold.com

 P.O. Box 1251  Phone +49 7723 / 65 40  Fax +49 7723 / 654 356