Technical Specifications:

• Number of Channels: 2 independent counter inputs
• Counter Mode: Incremental encoder (A/B quadrature), single-pulse (A only), up/down counter
• Maximum Counting Frequency: 100 kHz (500 kHz with quadrature decoding, i.e., 4× counting)
• Resolution: 32-bit signed counter (range: -2,147,483,648 to +2,147,483,647)
• Input Signal Levels: 5 V DC TTL / 24 V DC (configurable per channel)
• Input Impedance (5 V mode): ≥ 100 kΩ
• Input Impedance (24 V mode): ≥ 10 kΩ
• Filter Time: Configurable: 0.5 µs, 1 µs, 2 µs, 4 µs (hardware debounce)
• Encoder Types Supported: Incremental (A/B/Z), single-ended pulse, differential (RS-422 via external converter)
• Isolation: Channel-to-channel isolation, 500 V DC; field-side to logic-side isolation, 500 V DC
• Bus System: X20 System Bus
• Power Supply: 24 V DC via X20 bus connector
• Power Consumption: ≤ 1 W
• Operating Temperature: -25 °C to +70 °C
• Protection Rating: IP20 (with X20 base/coupler)
• Dimensions (W × H × D): 25 mm × 90 mm × 75 mm
• Weight: Approximately 100 g

Functional Features:

• Quadrature decoding (×1, ×2, ×4) configurable per channel
• Frequency measurement (gating time: 1 ms to 60 s, configurable)
• Period measurement (for speed calculation)
• Zero-pulse (Z) capture for reference/homing
• Gate input for frequency measurement (external gate signal)
• Compare function: Counter value compare with preset value → digital output trigger
• Interrupt on count overflow/underflow

Structural Characteristics:

• PA66-GF30 plastic housing, UL94 V-0
• Push-in spring terminal connectors for 0.5 mm² to 2.5 mm² wire
• DIN rail TS 35 mounting
• LED indicators: Power (green), Channel 0 (green), Channel 1 (green), Fault (red)

Material Composition:

• Housing: Glass-fiber reinforced polyamide (PA66-GF30)
• Terminals: Phosphor bronze, tin-plated
• PCB: FR-4, conformally coated
• Counter IC: 32-bit hardware counter with quadrature decoder

Applicable Industries:

• Servo motor position feedback
• Conveyor length measurement
• Winding/unwinding machines (tension control)
• Printing registration (web position)
• Elevator/lift position tracking

Installation Requirements:

• Mount on X20 Base (3EX280.60-1) or X20 Coupler (3EX290.60-1)
• Use shielded twisted-pair cable for encoder signals (A, B, Z)
• Shield ground at controller end only (single-point grounding)
• Maximum cable length: 10 m (5 V TTL), 50 m (24 V, with line driver)
• For differential encoders (RS-422), use external line receiver (e.g., B&R 3IF360.6)

Usage Notes:

• Do not exceed 100 kHz input frequency — counts will be lost above this limit
• For noisy environments, set hardware filter time to 2 µs or 4 µs
• Z-phase must be connected for homing operations — omit only for pure speed measurement
• Counter value is retained in non-volatile memory on power loss (battery-backed in some configurations)