Datasheet

2 Specifications are subject to change without notice (19-11-02)
Mode of Operation
Function Aa - Asymmetri-
cal Recycler ON-time peri-
od first
The relay operates and the
ON-time period (T1) begins
as soon as the power sup-
ply is connected. After the
ON-time period the relay
releases for the OFF-time
period (T2). This sequence
continues until the power
supply is interrupted for at
least 200 ms.
Function Ab - Asymmetri-
cal Recycler OFF-time
period first
The OFF-time period (T1)
begins as soon as the pow-
er supply is connected.
After the OFF-time period
the relay operates for the
ON-time period (T2). This
sequence continues until
the power supply is inter-
rupted for at least 200 ms.
Wiring Diagram
Operation Diagrams
Function Aa - Asymmetrical Recycler - ON first
Power supply
Relay ON
LED
Function Ab - Asymmetrical Recycler - OFF first
DCB51
Supply Specifications General Specifications
Power Supply Overvoltage cat. II
Rated operational voltage (IEC 60664, IEC 60038)
trough terminals A1, A2: 24 VDC +10% -15% and
24 to 240 VAC +10% -15%
45 to 65 Hz
Voltage interruption ≤ 10 ms
Rated operational power 1.5 W
Power ON delay ≤ 150 ms
Power OFF delay ≤ 200 ms
Indication for
Power supply status LED, green
Output status LED, yellow
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%
Weight Approx 100 g
Screw terminals
Tightening torque Max. 0.5 Nm according to
IEC EN 60947
EMC Electromagnectic Compatibility
Immunity According to EN 61000-6-2
Emission According to EN 50081-1
Approval UL
CE Marking Yes
Function/Range/Time Setting
Setting of function:
No connection between
terminals A1 and Y1:
Aa - asymmetrical recy-
cler (ON first)
Connection between ter-
minals A1 and Y1:
Ab - asymmetrical recy-
cler (OFF first)
Upper knob:
T1 time range setting
Setting of T1 time range.
Centre top knob:
Time T1 setting on relative
scale: 1 to 10 with respect
to the chosen range.
Centre bottom knob:
Setting of T2 time range.
Lower knob:
Time T2 setting on relative
scale: 1 to 10 with respect
to the chosen range.
Power supply
Relay ON
LED
ON/OFF first
ON
OFF
ON
OFF