Datasheet

Specifications are subject to change without notice (19-11-02) 1
Timers
Asymmetrical Recycler
Type DCB51
• Time range 0.1 s to 100h
• 2 selectable functions
Aa - Asymmetrical recycler ON first
Ab - Asymmetrical recycler OFF first
• Selection of time range by front knobs
• Knob adjustable time setting
• Automatic start
• Output: 1 x SPDT relay
• For mounting on DIN rail in accordance with DIN/EN
50 022
• 17.5 mm DIN-rail housing
• Combined AC and DC power supply voltage
• LED indication for relay status and power supply ON
Product Description
Combined function timer with
asymmetrical recycler ON or
OFF first selectable by con-
nection between pins A1 and
Y1.
Individual selection of the time
ranges from 0.1 s to 100 h.
For mounting on DIN-rail.
Type Selection
Mounting Output Housing Supply: 24 VDC and 24 to 240 VAC
For DIN-rail 1 x SPDT Mini-D DCB 51 C M24
Time Specifications Output 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 (with respect to full scale
value)
Within rated power supply ≤ 0.2% - whole range
Within ambient temperature ≤ 500 ppm/°C
Reset
Power supply interruption ≥ 200 ms
Output 1 x SPDT 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 10
6
operations
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)
Ordering key
DCB 51 C M24
Housing
Function
Type
Item number
Output
Power Supply