Specifications are subject to change without notice (16.12.05)

Product Description

Ordering Key

Multifunction

Multi-voltage timer with 7
knob-selectable functions
and 7 knob-selectable time
ranges within 0.1s and 100h.
For mounting on DIN-rail.
Housing 17.5 mm wide for
SPDT version and 35.5 mm

for DPDT version, suitable
both for back and front panel
mounting.
Wide power supply range:
24 VDC and 24 to 240 VAC
or 12 to 240 VAC/DC.

· Selectable time range 0.1 s to 100 h
· 7 knob selectable functions:

delay on operate

interval

interval on trigger open

double interval

delay on release

symmetrical recycler ON first

symmetrical recycler OFF first

· Automatic or manual start
· Repeatability:

0.2%

· Output: 5 A SPDT or 5 A DPDT relays
· For mounting on DIN-rail in accordance with DIN/EN 50 022
· 17.5 mm (DMB51C) or 35.5 mm (DMB71D) DIN-rail

housing (DIN 43880)

· Combined AC and DC power supply
· LED indication for relay status and power supply ON

Output

SPDT or DPDT relay

Rated insulation voltage

250 VAC (rms)

Contact Ratings (AgSnO

)

DMB51 (SPDT):
Resistive loads

AC 1

5 A @ 250 VAC

DC 12

5 A @ 24 VDC

Small inductive loads AC 15

2.5 A @ 250 VAC

DC 13

2.5 A @ 24 VDC

DMB71 (DPDT)
Resistive loads

AC 1

5 A @ 250 VAC

Small inductive loads AC 15

3 A @ 250 VAC

DC 13

3 A @ 24 VDC

Mechanical life

30 x 10

operations

Electrical life

operations

(at 5 A, 250 V, cos

= 1)

Operating frequency

< 7200 operations/h

Dielectric strength

Dielectric voltage

2 kVAC (rms)

Rated impulse withstand
voltage

2.5 kV (1.2/50 µs)

Output Specifications

Type Selection

DMB 51 C M24

Housing
Function
Type
Item number
Output
Power supply

Time Specifications

Time ranges

Knob selectable

0.1 to 1 s
1

to 10 s

to 60 s

60 to 600 s
0.1 to 1 h
1

to 10 h

10 to 100

Setting accuracy

Repeatability

0.2%

Time variation

Within rated power supply

0.05%/V

Within ambient temperature

0.2%/°C

Reset

Manual reset of time and/or

Close the trigger contact

relay

between pins A1 and Y1

Pulse duration

100 ms

Power supply interruption

200 ms

Automatic start

Connect pins A1 and Y1

Types DMB51, DMB71

Timers

Mounting

Output

Housing

Supply:

12 to 240 VAC/DC

24 VDC and 24 to 240 VAC

DIN-rail

SPDT

Mini-D

DMB 51 C W24

DMB 51 C M24

DIN-rail

DPDT

Mini-D

DMB 71 D W24

DMB 71 D M24

DMB51

DMB71

Specifications are subject to change without notice (16.12.05)

DMB51, DMB71

Power ON delay

100 ms

Indication for

Power supply ON

LED, green

Output relays ON

LED, yellow
(flashing when timing)

Environment

(EN 60529)

Degree of protection

IP 20

Pollution degree

2 (IEC 60664)

Operating temperature

-20° to +60°C, R.H. < 95%

Storage temperature

-30° to +80°C, R.H. < 95%

Housing dimensions

DMB51C

17.5 x 81 x 67.2 mm

DMB71D

35.5 x 81 x 67.2 mm

Weight

75 g

Screw terminals

Tightening torque

Max. 0.5 Nm according to
IEC EN 60947

Approvals

UL, CSA
RINA (DMB 51 only)

CE Marking

Yes

EMC

Electromagnetic Compatibillity

Immunity

According to EN 61000-6-2

Emissions

According to EN 61000-6-3

General Specifications

Power supply

Overvoltage cat. II

Rated operational voltage

(IEC 60664, IEC 60038)

through terminals:
(DMB51C)

A1, A2 M24:

24 VDC ± 15% and
24 to 240 VAC + 10% -15%,
45 to 65 Hz

W24:

12 to 240 VDC + 10% -15%
and
12 to 240 VAC
+ 10% -15%, 45 to 65 Hz

(DMB71D)

A1, A2 M24:

24 VDC ± 15%
24 to 240 VAC + 10% -15%,
45 to 65 Hz

W24

12 to 240 VDC + 10% -15%
and
12 to 240 VAC +10% -15%,
45 to 65 Hz

Voltage interruption

10 ms

Rated operational power

(DMB51C)

AC supply:

4 VA

DC supply:

1.5 W

(DMB71D)

AC supply

5.5 VA

DC supply

2 W

Supply Specifications

Upper knob:
Setting of function:

Op - delay on operate
In - interval
Io - interval on trigger open
Id - double interval
Dr - delay on release
R - symmetrical recycler
(ON first)
Rb - symmetrical recycler
(OFF first)

Centre knob:
Time setting on relative scale:
1 to 10 with respect to the
chosen range.

Lower knob:
Setting of time range

Time Setting

Mode of Operation

Function Op
Delay on operate
The time period begins as
soon as the trigger contact
is closed.
At the end of the set delay
time the relay operates and
does not release until the
trigger contact is closed
again or the power supply is
disconnected. If the trigger
contact is closed before the
end of the delay time, the
device resets and a new
time period starts.

Function In
Interval
The relay operates and the
time period begins as soon
as the trigger contact is
closed. The relay releases at

the end of this period or
when the power supply is
disconnected. The relay
operates again when the trig-
ger contact is closed again. If
the trigger contact is closed
before the end of the delay
time, the device resets and a
new time period starts.

Function Io
Interval on trigger open
The relay operates and the
time period begins as soon
as the trigger contact is
opened. At the end of the
set delay or when the power
supply is disconnected the
relay releases. The relay
operates again when the
trigger contact is opened
again. If the trigger contact

is opened before the end of
the delay time the relay
keeps ON and a new time
period begins.

Function Id
Double interval
The relay operates and the
time period begins as soon
as the trigger contact is
closed. The relay releases at
the end of this period or
when the power supply is
disconnected. When the
trigger contact is opened
the relay operates again for
the set delay period. If the
trigger contact is opened
before the end of the first
time period the second one
begins; if the trigger contact
is closed before the end of

the second time period the
device resets and the first
time period begins again.

Function Dr
Delay on release
The relay operates as soon
as the trigger contact is
closed. The time period
begins when the trigger con-
tact is opened. The relay
releases at the end of the
set delay time or when the
power supply is disconnect-
ed. The relay operates again
when the input contact is
closed again. If it is opened
before the end of the delay
time the relay keeps ON, a
new time period begins as
soon as the contact is
closed again.

Specifications are subject to change without notice (16.12.05)

DMB51, DMB71

Mode of Operation (cont.)

Function R
Symmetrical recycler, ON-
time period first
The relay operates and the
time period begins as soon
as the input contact is
closed. After the set delay
period the relay releases for
the same time period. This
sequence continues with
equal ON- and OFF-time
periods until the power sup-
ply is interrupted.

Function Rb
Symmetrical recycler,
OFF-time period first
The time period begins as
soon as the input contact is
closed. The relay is OFF
during the set delay period,
after this time it operates for
the same time period. This
sequence continues with
equal OFF- and ON-time
periods until the power sup-
ply is interrupted.

Additional Load
It's possible to wire an addi-
tional load (i.e. a relay)
between pins Y1 and A2,
driven by the trigger contact
without damaging the
device.

Yellow LED working
mode
Timing: Slow blinking

Relay ON: See operation
diagrams

Incorrect knobs position:
Fast blinking

Operating Diagrams

Power supply

Relay ON

Trigger input

LED

Function Op - Delay on operate - Manual start

Power supply

Relay ON

LED

Function Op - Delay on operate - Automatic start

Power supply

Relay ON

Trigger input

LED

Function In - Interval - Manual start

Power supply

Relay ON

LED

Function In - Interval - Automatic start

OFF

Wiring Diagram

DMB51CM...

DMB51CW...

DMB71DM...

L(+)

N(-)

DMB71DW...

DMB71DM...
DMB71DW...

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