Latching Relays, Interface Relays, Switching Relays, DoldPCB,Safety,Relays,DoldPCB,Safety,Relays,DoldPCB,Safety,Relays,DoldPCB,Safety,Relays,Dold

Latching/Interface and Switching Relays From DOLD

Latching/interface and switching relays are ideal connecting links between the highly-sensitive and low-power logic circuitry of a PLC, control system or process computer and the raw environment of the power level on a machine such as motor drives, magnetic clutches or hydraulic cylinders. The relays ensure a metallic isolation between logic and power circuitry.

There is a differentiation between bistable devices (latching relay) and monostable devices (cinterface or switching relay). The latter are available as power/industrial relays up to 16 A with pin base and socket for top hat rail mounting or as complete solution for installation in switch cabinets and distribution boards, or as positive-action devices for safety applications.

Advantages

  • One-stop offering: Wide choice from a complete range with several designs for a variety of applications
  • Save time for installation and maintenance by pin bases snapping on top hat rails
  • For medium or low switching frequency many times more cost-effective alternative compared to semiconductors Insensitive to overcurrent/overvoltage
  • Latching relays: Energy-saving solution for applications with desired latching properties, the stored condition is kept even after removal of the control pulse or voltage drops

Technology

Inadvertent pulses on the input side of a control may cause false triggering or, if containing a larger amount of energy, serious damages to an electronic control system. On their output side, electronic control systems must be protected against short-circuits and reactions by inductive loads. DOLD coupling modules, both input (imod) and also output (omod) modules, meet following criteria and thus they are suited for all interface applications in demanding control systems:

  • Safe electrical isolation between control and load circuits acc. to VDE 0106 Part 101 (e.g. between CPU and sensors or actuators)
  • Highly effective interference suppression
  • Signal conditioning

Coupling relays with semiconductor output (IK 3070.91; .95)

  • For higher switching frequencies
  • For bounce-free switching
  • Optionally with transistor or triac output
  • Long service life
  • Low trigger power

Electromechanical coupling relays

Electromechanical I/O modules work with one switching contact on the output and include a high-quality PCB relay with following features:

  • Low contact resistance
  • Switch any d.c. and a.c. loads
  • With gold-plated contacts suited for low-level signals in analog controls

Applications

  • DOLD latched/interface and switching relays are suited for all interface applications in demanding control systems.
  • Latching relays: e.g. in the control circuit of high voltage switchgear of electricity supply companies
  • Interface/switching relays: e.g. in materials handling, hoists, injection moulding machines, wood working machines
  • Notching relays: e.g. alternating pump controls
Latching, interface and switching relays
Coil voltages partly possible up to 240 V AC/DC
Fu NCtion
Number
of
systems
Output
contacts,
max.
Initiator
triggering
Suppressor circuit on the coil input
Thermal
current Ith
max. [A]
Style
Type
Latching relay
1
2 C/O
6
Switch cabinet: 22.5
Latching relay
1
4 NO, 4 NC
8
Switch cabinet: 45
Latching relay
1
4 NO, 4 NC
+
6
Switch cabinet: 22.5
Stepping relay
3 NO
+
10
Switch cabinet: 45
Interface relay / input-output
1
1 NO
3
Distribution board: 9
Interface relay / input-output
1
1 C/O
5
Switch cabinet: 22.5
Interface relay / input-output
1
1 NO, 1 NC
+
+
5
Switch cabinet: 11.5
Interface relay / input-output
1
1 C/O, 2 NO
+
+
5
Switch cabinet: 11.5
Interface relay / input-output
1
2 C/O
+
+
5
Switch cabinet: 11.5
Interface relay / input-output
1
4 C/O
+
+
5
Switch cabinet: 22.5
Interface relay / input-output
1
2 C/O
+
+
10
Distribution board: 17.5
Switch cabinet: 17.5
Interface relay / input-output
1
2 C/O
10
Distribution board: 17.5
Switching relay / input-output
1
2 C/O
+
+
16
Distribution board: 17.5
Switching relay / input-output
1
3 C/O
+
+
16
Distribution board: 35
Switching relay / input-output
1
4 C/O
+
+
16
Distribution board: 52.5
Switching relay / input-output
1 - 8
2 C/O
each
+
+
8
Distribution board: 17.5; 140
Interface relay
1
2 C/O
+
5
Switch cabinet: 22.5
Output switching relay system
1
1 C/O
+
5
Switch cabinet: 11.5
Output switching relay system
4
1 C/O
each
+
10
Distribution board: 70
Switch cabinet: 70
Relay for plug-type socket
1
1 C/O
+
+
10
PCB relay fitting to:
HC 3093
plug-in sockets
ET 1415.041/ .044/ .047: 15.8
Function modules
ET 1415.911/ .912
Relay for plug-type socket
1
1 C/O
+
+
10
Relay for plug-type socket
1
2 C/O
+
+
5
Bistable relay for plug-type socket
1
1 C/O
+
+
16
Interface module with plug-type socket
1
2 C/O
16
Interface relay
1
6 C/O
2.5
Switch cabinet: 22.5
NO = normally open contact; NC= normally closed contact; C/O = change over
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