Specifications are subject to change without notice (13.10.04) 1
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:
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
• 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
2
)µ
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
Mechanical life ≥ 30 x 106operations
Electrical life ≥ 10
5
operations
(at 5 A, 250 V, cos ϕ = 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
6 to 60 s
60 to 600 s
0.1 to 1 h
1 to 10 h
10 to 100 h
Setting accuracy ≤ 5%
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: 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
2 Specifications are subject to change without notice (13.10.04)
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 dimesions
(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 (DMB 51 only),
RINA (DMB 51 only)
CE Marking Ye s
EMC
Electromagnetic Compatibillity
Immunity According to EN 61000-6-2
Emissions According to EN 50081-1
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 to 240 VDC + 10% -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 trigger 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 contact is opened. The relay
releases at the end of the
set delay time or when the
power supply is disconnected. 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 (13.10.04) 3
DMB51, DMB71
Mode of Operation (cont.)
Function R
Symmetrical recycler, ONtime 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 supply 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 supply is interrupted.
Additional Load
It's possible to wire an additional 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
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Wiring Diagram
DMB51CM...
DMB51CW...
DMB71DM...
S
Y1
L(+)
µµ
µµ
18
26 28
16
A1
A2
15
25
N(-)
DMB71DW...
DMB71DM...
DMB71DW...
Function Op - Delay on operate - Manual start
Power supply
Trigger input
Relay ON
LED
Power supply
Relay ON
LED
Function Op - Delay on operate - Automatic start
T T
T T
Function In - Interval - Manual start
Power supply
Trigger input
Relay ON
LED
Function In - Interval - Automatic start
Power supply
Relay ON
LED
T T
T
T
4 Specifications are subject to change without notice (13.10.04)
DMB51, DMB71
ON
OFF
ON
OFF
ON
OFF
Function R - Symmetrical recycler (ON first)
67.2
18.7
45
17.5
81
2
Dimensions
DMB51
DMB71
67.2
18.7
45
35.5
81
2
Operating Diagrams (cont.)
ON
OFF
ON
OFF
Function Io - Interval on trigger open
Power supply
Trigger input
Relay ON
LED
T
Function Dr - Delay on release
Power supply
Trigger input
Relay ON
LED
T
Function Rb - Symmetrical recycler (OFF first)
Power supply
Function Id - Double interval
Power supply
Trigger input
T
LED
Relay ON
T T
Power supply
Trigger input
Relay ON
LED
T T T T
Trigger input
Relay ON
LED
T T T T
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