Relays are crucial components in electrical systems, serving as switches that control the flow of electricity. Among them, it stands out for its reliability and efficiency.
Understanding Relays in Electrical Systems
Before delving into the specifics of it, it’s essential to grasp the role of relays in electrical systems. Relays act as electromechanical switches, controlling high-power circuits with the help of low-power signals.
Types of Relays
Electromechanical Relays
Solid-State Relays
Thermal Relays
Importance of Relays in Industrial Applications
Relays play a vital role in various industrial applications, including automation, power distribution, and safety systems. They ensure seamless operation and protect equipment from damage due to electrical faults.
0.6…60 s adjustable on energisation delay (tolerance: 0…10 % of the full scale value)
Switching capacity in VA
1250 VA
Minimum switching current
10 mA at 5 V DC
Maximum power consumption in VA
5 VA AC
Measurement range
0.05…0.5 s 0.5…5 min 1…10 min 1…10 s 0.5…5 s 0.1…1 s 0.1…1 min
Utilisation category
AC-12 conforming to IEC 60947-5-1 AC-13 conforming to IEC 60947-5-1 AC-14 conforming to IEC 60947-5-1 AC-15 conforming to IEC 60947-5-1 DC-12 conforming to IEC 60947-5-1 DC-13 conforming to IEC 60947-5-1 DC-14 conforming to IEC 60947-5-1
Measurement range
0.05…600 s
time delay
Adjustable 0.6…60 s Ti- inhibition time delay upon startup
Complementary
rest time in memory mode
50 ms contact S2 in memory mode on time delay 1 s supply Un in memory mode on time delay
Maximum switching voltage
250 V AC/DC
[Un] rated nominal voltage
24…240 V AC/DC 50/60 Hz, non self-powered
Supply voltage limits
20.4…264 V AC/DC
Maximum power consumption in W
3 W DC
Width
35 mm
Output contacts
1 C/O
Contacts material
Cadmium free
Nominal output current
5 A
delay at power up
0.05 s
Hysteresis
5 % of threshold
Measurement accuracy
+/- 10 % of the full scale value
Repeat accuracy
+/- 0.5 % for input and measurement circuit +/- 0.5 % for time delay
Measurement error
+/- 0.1 %/°C with temperature variation < +/- 1 % over the whole range with voltage variation
Input frequency
0.0017…20 Hz
Response time
15 ms max (on crossing the threshold)
Polarity
Reversible polarity on DC supply
Threshold setting
10…100 %
supply voltage for sensor
11.5…12.5 V
Maximum supply current for sensors
40 mA for < 24 V AC at 25 °C 40 mA for < 24 V DC at 25 °C 50 mA for 24…240 V AC 50 mA for 24…240 V DC
Impulse duration
>= 5 ms high state >= 5 ms low state
Input compatibility
3-wire sensor (E1) PNP or NPN, 12 V, 50 mA NAMUR sensor (E2), 12 V, 1.5 kOhm Voltage input (E1), 0…30 V, 9.5 kOhm, high state >= 4.5 V low state <= 1 V Volt-free contact input (E1), 12 V, 9.5 kOhm
Marking
CE : EMC 89/336/EEC CE : 73/23/EEC
Overvoltage category
III conforming to IEC 60664-1
Insulation resistance
> 500 MOhm at 500 V DC between supply and relay output conforming to IEC 60255-5 > 500 MOhm at 500 V DC between measurement and relay output conforming to IEC 60664-1 > 1 MOhm at 500 V DC between supply and measurement conforming to IEC 60255-5 > 500 MOhm at 500 V DC between supply and relay output conforming to IEC 60664-1 > 500 MOhm at 500 V DC between measurement and relay output conforming to IEC 60255-5 > 1 MOhm at 500 V DC between supply and measurement conforming to IEC 60664-1
[Ui] rated insulation voltage
250 V conforming to IEC 60664-1
operating voltage tolerance
– 15 % + 10 % Un
Supply frequency
50/60 Hz +/- 10 %
Operating position
Any position without derating
Connections – terminals
Screw terminals, 1 x 0.5…1 x 4 mm² (AWG 20…AWG 11) solid without cable end Screw terminals, 2 x 0.5…2 x 2.5 mm² (AWG 20…AWG 14) solid without cable end Screw terminals, 1 x 0.2…1 x 2.5 mm² (AWG 24…AWG 12) flexible with cable end Screw terminals, 2 x 0.2…2 x 1.5 mm² (AWG 24…AWG 16) flexible with cable end
Tightening torque
0.6…1 N.m conforming to IEC 60947-1
Housing material
Self-extinguishing plastic
Status LED
1 LED green for power ON 1 LED yellow for inhibit 1 LED yellow for relay (R)
Mounting support
35 mm symmetrical DIN rail conforming to IEC 60715
Electrical durability
100000 cycles
Mechanical durability
30000000 cycles
Operating rate
<= 360 operations/hour full load
Control type
Without test button
Environment
Immunity to microbreaks
50 ms
Electromagnetic compatibility
Emission standard for industrial environments conforming to IEC 61000-6-4 Emission standard for residential, commercial and light-industrial environments conforming to IEC 61000-6-3 Immunity for industrial environments conforming to NF EN/IEC 61000-6-2
Standards
NF EN 60255-6 IEC 60255-6
Product certifications
C-Tick GOST UL GL CSA
Ambient air temperature for storage
-40…70 °C
Ambient air temperature for operation
-20…50 °C
Relative humidity
95 % at 55 °C conforming to IEC 60068-2-30
Vibration resistance
0.35 mm (f= 5…57.6 Hz) conforming to IEC 60068-2-6/IEC 60255-21-1 1 gn (f= 57.6…150 Hz) conforming to IEC 60068-2-6/IEC 60255-21-1
Shock resistance
15 gn for 11 ms conforming to IEC 60255-21-1
IP degree of protection
IP20 (terminals) conforming to IEC 60529 IP30 (casing) conforming to IEC 60529
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