Phoenix contact PLC-BSC-24DC/21 2966016 interface terminal with 24V miniature solid-state relay OPT-24DC/24DC/2 2966595 with 3A 3-33Vdc output

Solid-state relays (opto-couplers) are used as an interface between different signal levels or to isolate one signal from another. Opto-coupler is similar in function to a relay. The modules are often used to enable the low voltage outputs of PLC's to control higher voltage and current loads. For example, a load voltage can be even 250 V and it will be still completely galvanically isolated from the PLC.

Opto-couplers have the following qualities:

• Long life
• No mechanical wear and tear (solid state operation)
• Silent operation
• No contact bounce

Some examples of optocoupler applications:

• Control of DC loads
• Application with electrical isolation
• To convert an NPN output into a PNP output
• To convert an PNP output into a NPN output

PLC-BSC-24DC/21 2966016 screw terminal block technical data

• Nominal input voltage U_N:
  • 24Vdc
• Status display:
  • LED
• Protective circuit:
  • Damping diode
  • Polarity protection diode
• Conductor cross section solid min:
  • 0.14mm²
• Conductor cross section solid max:
  • 2.5mm²
• Conductor cross section stranded min:
  • 0.14mm²
• Conductor cross section stranded max:
  • 2.5mm²
• Connection method:
  • Screw connection
• Stripping length:
  • 8 mm
• Screw thread:
  • M3
• Size (WxHxD):
  • 6.2x80x94mm
• Color:
  • Green
• Ambient temperature (operation):
  • -40...60°C
• Ambient temperature (storage/transport):
  • -40...85°C
• Operating mode:
  • 100% operating factor
• Inflammability class according to UL 94:
  • V0
• Mounting position:
  • Any
• Assembly instructions:
  • In DIN rail in rows with zero spacing

Miniature solid-state relay OPT-24DC/24DC/2 2966595 technical data

• Nominal input voltage U_N:
  • 24Vdc
• Input voltage range in reference to U_N:
  • 0.8...1.2V
• Switching threshold "0" signal, voltage:
  • ≤ 10V
• Switching threshold "1" signal voltage:
  • ≥ 16V
• Typical input current at U_N:
  • 7mA
• Typical response time:
  • 20µs (at U_N)
• Typical turn-off time:
  • 300µs (at U_N)
• Transmission frequency:
  • 300Hz
• Output voltage range:
  • 3...33Vdc
• Limiting continuous current:
  • 3 A (see derating curve)
• Maximum inrush current:
  • 15 A (10 ms)
• Voltage drop at max. limiting continuous current:
  • ≤ 150 mV
• Output circuit:
  • 2-wire
  • Floating
• Type of protection:
  • Protection against polarity reversal
  • Surge protection
• Size (WxHxD):
  • 5x28x15mm
• Test voltage input / output:
  • 2.5 kV (50 Hz, 1 min.)
• Ambient temperature (operation):
  • -25...60°C
• Ambient temperature (storage/transport):
  • -25...70°C
• Mounting position:
  • Any
• Assembly instructions:
  • In rows with zero spacing
• Operating mode:
  • 100% operating factor
• Standards / Regulations
  • IEC 60664
  • EN 50178
  • IEC 62103