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OME-DB-24PR-24PRD

24-Channel Power Relay Output Board - Panel Mount

  • Accepts 20-Pin Connector (OME-DB-24PR Only) to Control 8 Form C and 8 Form A Relays
  • Switch up to 5A at 250 Vac /5A at 30 Vdc
  • Includes Varistor to Protect Each Channel Against High Voltage Spike
  • Screw Terminals for Easy Field Wiring
OME-DB-24PR-24PRD
From £ 662.58
24-Channel Power Relay Output Board - Panel Mount OME-DB-24PR-24PRD OME-DB-24PR-24PRD
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Product Overview
  • Control Output 16 Form A, 8 Form C
  • Cycle Time 10 ms
  • Electrical Life 3 x 10^4 cycles
  • Height 210 mm
  • Horsepower Rating 0.1 HP
  • Logic TTL Relay On
  • Mechanical Life 2 x 10^7 cycles
  • Number of Channels 24
  • Operating Temperature, Max 60 °C
  • Operating Temperature, Min 0 °C
  • Power Consumption 24 V @ 0.8 A ;5 V @ 0.2 A
  • Relative Humidity 5 to 90 % RH non-condensing
  • Relay Current 5 A
  • Series ID OME-DB-24PR-24PRD
  • Storage Temperature, Max 70 °C
  • Storage Temperature, Min -20 °C
  • Switching Voltage 270/150 Vac/Vdc
  • Voltage Source 50 A/250 Vac, 5 A/30 Vdc
  • Width 130 mm

Supported Applications

The Omega OME-DB-24PR and OME-DB-24PRD series are 24-channel power relay output boards designed for I/O control applications. These daughter boards interface with compatible data acquisition systems to drive external loads, including configurations requiring Form C (change-over) or Form A (normally open) switching.

Documented compatibility includes use as an expansion board for OME-PIO-D24, OME-PIO-D48, OME-PIO-D96, and OME-PIO-D144 systems. The series is also compatible with other OPTO-22 style boards.

Operating Conditions & Performance

The relay output board operates within an ambient temperature range of 0 to 60°C (32 to 140°F) and a storage temperature range of -20 to 70°C (-4 to 158°F). Humidity ratings are specified as 5 to 90% RH non-condensing.

Performance specifications for the relay outputs include:

  • Nominal Load: 50 A/250 Vac, 5 A/30 Vdc
  • Maximum Switching Power: 0.1 HP
  • Maximum Switching Voltage: 270 Vac, 150 Vdc
  • Maximum Switching Current: 5 A
  • Mechanical Life Expectancy: 2 x 10^7 operations
  • Electrical Life Expectancy: 3 x 10^5 operations
  • Time Value (Response): 10 ms
  • Control Logic: Input TTL high (+5V) activates the relay

The board includes varistors for surge protection. Power consumption is rated at a maximum of 24 Vdc @ 0.8 A and 5 Vdc @ 0.2 A.

Configuration Options

The series offers configurable options regarding voltage, connector type, mounting style, and included cabling:

  • Voltage Versions: Available in 12 Vdc or 24 Vdc external power supply configurations.
  • Connector Types:
    • OME-DB-24PR models utilize a 50-pin header and include a 1.5 m (5') 50-pin flat cable; they also support connection via a 20-pin connector for specific relay groups.
    • OME-DB-24PRD models feature a 37-pin D-sub connector and include a 1 m 37-pin D-sub connector cable.
  • Mounting Options: Models are available with optional DIN-rail mounting kits (e.g., OME-DB-24PR/24/DIN, OME-DB-24PRD/12/DIN).
  • Cable Accessories: Additional cables include 20-pin flat cables in 1 m and 2 m lengths; 50-pin flat cable (1.5 m); and 37-pin male-male D-sub connector cables in 1 m and 2 m lengths.
  • Field Wiring: Screw terminals are provided for field wiring connections.

Key Product Differences

The primary distinction between the two model families is the interface connector. The OME-DB-24PR series uses a 50-pin header with an included flat cable, while the OME-DB-24PRD series utilizes a 37-pin D-sub connector.

Within each family, variations are defined by:

  • Voltage Rating: Suffixes or model codes indicate either 12 Vdc or 24 Vdc operation (e.g., OME-DB-24PR/12 vs. OME-DB-24PR/24).
  • Included Mounting Hardware: Models with the "/DIN" suffix include a DIN-rail mounting kit, whereas standard models are panel mount only.

The physical dimensions for all boards in this series are 210 H x 130 mm W (8.3 x 5.1"). The OME-DB-24PRD is noted as being shown smaller than actual size in some documentation illustrations.

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