SLC284 Bachmann Safety processor module

Manufacturer: BACHMANN

Model/Part Number: SLC284

Description: Safety processor module

Item Numbers:

• SLC284: 00014273-00

• SLC284❉: 00017465-00

Processor

• CPU: 2x LPC2468, 72 MHz, 32 bit

Controller

• Programming via controller (I/O bus) or serial interface (COM)

• Number of independent safety programs per SLC: 1

• Program cycle minimal: 5 ms

• I/O expansion via: SDI208 or SDO204 modules

Digital Inputs

• Quantity: 16 digital inputs - can be used redundantly in pairs (PL e/SIL3/Cat 4)

• Input voltage range (H): 15 .. 34 V DC

• Input voltage range (L): -34 .. +5 V DC

• Input delay (HW): 300 µs

• Input delay (SW): 1 ms with deactivated test clocking

• Input type: According to IEC61131-2

  • Input current (at least): Type 1, 3.5 mA at 24 V DC

• Status display (LED): Green

• Error monitoring: Internal function monitoring

• External test clocking: Optional

Digital Outputs

• Quantity: 8 digital outputs - can be used redundantly in pairs (PL e/SIL3/Cat 4)

• Output voltage range: 18 .. 34 V DC

• Output current per channel (max.): 0.5 A nominal

• Total current per group (max.): 2 A

• Delay 0 to 1: Max. 35 µs at full load

• Delay 1 to 0: Max. 155 µs at full load

• Output groups: 2, electronic fuse

• Status display (LED): Green

• Switching frequency (max., ohmic load): 500 Hz

• Error monitoring: Short circuit, overload, inadequate or excess voltage of the power supply

• Time-delayed emergency shut-off: Each output individual from 0 .. 1800 s configurable (resolution 100 ms)

  • Emergency shut-off activated in the event of: Communication loss (e.g., cable break or failure in the supply voltage)

Internal Power Supply

• Galvanic isolation from the system: 500 V

• Galvanic isolation between groups: 500 V

• Internal power supply: Backplanes BS2xx

• Current consumption internal: 5 V / 600 mA via backplane

External Power Supply

• Reverse polarity protection: Yes

• Input voltage: 24 V DC (18 .. 34 V)

• Current consumption: Normally 95 mA at +24 VDC + Σ current consumption of the encoders and sensors

Connection Technology

• Connection type: Screw or spring terminal, writable and codable plug

Standards

• Machine safety: IEC61508: Functional safety – draft of complex E/E/PE safety components

• Approved for:

  • ISO13849: Safety of Machinery

  • IEC62061: Functional safety machine-related E/E/PE systems

  • IEC61511: Functional safety equipment and process industry

  • EN954

• Product standard: IEC61131-2

• UL508

Additional Features

• Status display via LEDs

• Operating mode adjustable via hex switch

Ambient Conditions

Model Variants

• SLC284: Safety CPU module; integrated digital input/output; SIL3/PLe: 8x DI 24V; 4x DO 24V / 0.5A; (SIL2/PLd: 16x DI, 8x DO); 6ms cycle time; RS232; operating standalone or with CPU module

• SLC284❉: Like SLC284; ColdClimate (❉)

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