Characteristics of ERD Series

(PUSH OR PULL)

serie-erd

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      You can also contact us directly at:

      Teléfono: +34 94 453 10 61

      Email: elec@nafsa.es

      Fax: +34 94 625 01 51


      Standard voltage:
      Vdc (24V, 48V, 110V, 125V)
      Vac (110V60Hz; 230V50Hz)

      Electromagnets protection rate: IP00

      Cycle duration: 3 min

      Insulation class: B (130ºC)

      Work: Pull/push

      Return spring incorporated: Yes

      Plunger weight: 117 gr.

      Electromagnet weight: 720 gr.

      Documents:

      TYPE: ERD60-05/C

      Description

      Simple effect linear solenoids of the ERD serie have got a double coil, one of them with low resistive value (pulse coil) and the other one with high resistive value (holding coil).
      It is used when a 100% duty cycle and a huge force at the begining of the stroke are needed.

      Working

      Before the performance, when the solenoid is off (see fig.3), the holding coil must be off by an external microswitch.

      The solenoid is fed at its standard voltage Un (between 1 and 2 terminals) and only the pulse coil works (as it has got low resistive value, it will demand much power), and the solenoid shaft moves due to the forces indicated in chart 2.

      When total stroke is completed the solenoid shaft must push the microswitch and quit short-circuit of the holding coil, so both serie coils start to work, adding its resistive value and getting little demand of power.

      Drawing double coil ERD

      Application examples

      Pulse coil

      Chart 1
      Duty cycle (ED%)
      20
      15
      10
      5
      3
      Absorved power at 20°C
      68
      115
      169
      337
      462
      Excitation max time (s)
      36
      27
      15
      8
      5
      Chart 2
      Duty cycle ED(%)
      Stroke “s” (mm)
      20
      15
      10
      5
      3
      Magnetic Force Fm (N)
      25
      6
      9
      13
      24
      33
      20
      8
      13
      18
      33
      46
      15
      11
      19
      25
      44
      61
      10
      18
      28
      36
      64
      88
      5
      36
      56
      74
      137
      140
      3
      63
      94
      114
      162
      188
      1
      196
      235
      259
      263
      288
      0
      378
      390
      411
      436
      440

      ……………………………….

       Chart 3
      Standard return spring
      ERD60/5
      ER60/5
      ER60/5/B
      Force (N) a 25mm
      9.7
      1.6
      5
      Force (N) a 0 mm
      44
      5.3
      21
      Constant (K)
      1.37
      0.15
      0.65

      Holding coil

      • Power: 4 W
      • Duty cycle (ED%): 100%
      • Holding force: 60N

      Drawing (Solenoid off)

      Solenoid ERD off

      All the solenoids are tested at 20ºC. The force will decrease due to the standard temperature rising, decreasing a 30% at 65ºC. When the temperature is -10ºC, standard current will increase a 15%.

      Download the technical information of this product