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Электронный компонент: B121024006

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Specifications are subject to change without notice (25.10.99)
1
Timers
Mono-function, plug-in, delay
on release, miniature time re-
lays up to 60 s covering 2
individual time ranges. These
economical timers are often
used to switch on an exhaust
fan and keep it running for a
certain period of time after
disconnection of power sup-
ply.
Plug
Output
Time ranges
Supply: 24 VAC
Supply: 120 VAC
Supply: 220 VAC
Supply: 24 VDC
Circular
SPDT
0.15 -
6 s
B 128 024 006
B 128 120 006
B 128 220 006
B 128 724 006
8 pins
1.5 - 60 s
B 128 024 060
B 128 120 060
B 128 220 060
B 128 724 060
Circular
SPDT
0.15 -
6 s
B 121 024 006
B 121 120 006
B 121 220 006
B 121 724 006
11 pins
1.5 - 60 s
B 121 024 060
B 121 120 060
B 121 220 060
B 121 724 060
Time ranges
0.15 -
6 s
1.5
-
60 s
Time range accuracy
0 to +20% on max.
min. actual time
min.
set time
Repeatability deviation
1%
Time variation
Within rated power supply
0.05%/V
and ambient temperature
0.2%/C
Reset
Power supply interruption
Time and/or relay
500 ms
Output
SPDT relay
Basic electrical insulation
250 VAC (rms)
(contact/electronics)
Contact ratings (AgCdO)
(micro gap)
Resistive loads
AC 1
10 A/250VAC (2500 VA)
DC 1
1 A/250 VDC (250 W)
or
10 A/25 VDC (250 W)
Small inductive loads AC 15
2.5 A/230 VAC
DC 13
5 A/24 VDC
Mechanical life
30 x 10
6
operations
Electrical life
AC 1
2.5 x 10
5
operations
(at max. load)
Operating frequency
7200 operations/h
Insulation voltages
Rated insulation voltage
2.0 kVAC (rms) (cont./elec.)
Rated transient protection volt. 4 kV (1.2/50 s) (cont./elec.)
(IEC 60664)
Function
Output
Type
Power supply
Time range
Time ranges: 0.15 s to 60 s
Automatic start after drop out of power supply
Knob-adjustable time within range
Repeatability deviation:
1%
Output: 10 A SPDT relay
Plug-in type module
Scantimer housing
LED-indication for supply on
AC or DC power supply
Delay on Release
Types B 128, B 121
Ordering Key
Product Description
Type Selection
Time Specifications
Output Specifications
B 128 220 006
2
Specifications are subject to change without notice (25.10.99)
Power ON time
200 ms
Indication for
Power supply ON
LED, red
Environment
Degree of protection
IP 20 B
Pollution degree
2 (IEC 60664)
Operating temperature
-20 to +50C (-4 to +122F)
Storage temperature
-50 to +85C (-58 to +185F)
Weight
85 g
Approval
UL, CSA
B 128, B 121
Power supply AC types
Installation cat. III (IEC 60664)
Rated operational voltage
Through pins 2 & 10
220
220 VAC 15%,
or pins 2 & 7
45 to 65 Hz
120
120 VAC 15%,
45 to 65 Hz
024
24 VAC 15%,
45 to 65 Hz
Dropout tolerance
10 ms
Rated insulation voltage
None
Rated transient protection volt.
4 kV (1.2/50 s) @ 220 VAC
2.5 kV (1.2/50 s) @ 120 VAC
800 V (1.2/50 s) @ 24 VAC
(line/neutral)
Power supply DC type
Installation cat. III (IEC 60664)
Rated operational voltage 724
24 VDC + 15/- 20% (pin 2 pos.)
Rated insulation voltage
None
Rated transient protection volt. 800 V (1.2/50 s)
Consumption
AC supply
60 mA @ 50 Hz/70 mA @ 60 Hz
DC supply
1 W
Power supply
B 128
Power supply
B 121
SPDT
8 pin
Knob-adjustable on scale in
seconds.
Power supply
Relay on
The relay operates immedi-
ately after power supply is
applied.
When power supply is inter-
rupted, the time period starts
and at the end of the set time
the relay releases.
If power supply is reapplied
before the relay releases, the
time is reset and the relay
remains on.
B 121/B 128 monitor that
power supply is applied. If
power supply is interrupted,
the relay starts e.g. an alarm
(battery driven) after the time
period has expired.
Please note
B 128 and B 121 should not
be operated by pulses shorter
than 500 ms.
Sockets
S 408, S 411
Hold down spring
HF
Mounting rack
SM 13
Socket cover
BB 4
Potentiometer lock
PL 1
For further information refer "Accessories".
Supply Specifications
General Specifications
Mode of Operation
Time Setting
Operation Diagram
Wiring Diagrams
Accessories
SPDT
11 pin