


Product Description
Manufacturer: BACHMANN
Model/Part Number: SLC284
Description: Safety processor module
Item Numbers:
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SLC284: 00014273-00
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SLC284❉: 00017465-00
Processor
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CPU: 2x LPC2468, 72 MHz, 32 bit
Controller
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Programming via controller (I/O bus) or serial interface (COM)
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Number of independent safety programs per SLC: 1
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Program cycle minimal: 5 ms
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I/O expansion via: SDI208 or SDO204 modules
Digital Inputs
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Quantity: 16 digital inputs - can be used redundantly in pairs (PL e/SIL3/Cat 4)
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Input voltage range (H): 15 .. 34 V DC
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Input voltage range (L): -34 .. +5 V DC
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Input delay (HW): 300 µs
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Input delay (SW): 1 ms with deactivated test clocking
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Input type: According to IEC61131-2
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Input current (at least): Type 1, 3.5 mA at 24 V DC
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Status display (LED): Green
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Error monitoring: Internal function monitoring
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External test clocking: Optional
Digital Outputs
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Quantity: 8 digital outputs - can be used redundantly in pairs (PL e/SIL3/Cat 4)
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Output voltage range: 18 .. 34 V DC
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Output current per channel (max.): 0.5 A nominal
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Total current per group (max.): 2 A
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Delay 0 to 1: Max. 35 µs at full load
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Delay 1 to 0: Max. 155 µs at full load
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Output groups: 2, electronic fuse
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Status display (LED): Green
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Switching frequency (max., ohmic load): 500 Hz
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Error monitoring: Short circuit, overload, inadequate or excess voltage of the power supply
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Time-delayed emergency shut-off: Each output individual from 0 .. 1800 s configurable (resolution 100 ms)
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Emergency shut-off activated in the event of: Communication loss (e.g., cable break or failure in the supply voltage)
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Internal Power Supply
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Galvanic isolation from the system: 500 V
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Galvanic isolation between groups: 500 V
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Internal power supply: Backplanes BS2xx
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Current consumption internal: 5 V / 600 mA via backplane
External Power Supply
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Reverse polarity protection: Yes
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Input voltage: 24 V DC (18 .. 34 V)
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Current consumption: Normally 95 mA at +24 VDC + Σ current consumption of the encoders and sensors
Connection Technology
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Connection type: Screw or spring terminal, writable and codable plug
Standards
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Machine safety: IEC61508: Functional safety – draft of complex E/E/PE safety components
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Approved for:
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ISO13849: Safety of Machinery
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IEC62061: Functional safety machine-related E/E/PE systems
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IEC61511: Functional safety equipment and process industry
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EN954
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Product standard: IEC61131-2
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UL508
Additional Features
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Status display via LEDs
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Operating mode adjustable via hex switch
Ambient Conditions
Condition | Standard | ColdClimate (❉) |
---|---|---|
Operating temperature | -20 .. +60°C fanless | -30 .. +60°C fanless |
Relative humidity operation | 5 .. 95% without condensation | 5 .. 95% with condensation |
Storage temperature | -40 .. +85°C | -40 .. +85°C |
Relative humidity storage | 5 .. 95% without condensation | 5 .. 95% with condensation |
Model Variants
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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
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SLC284❉: Like SLC284; ColdClimate (❉)