Overview

The MMS 6410 is a Dual Channel Measuring Amplifier for inductive displacement sensors, designed for precise measurements in various industrial applications.

Technical Specifications

• Sensor Inputs:

  • Two independent inputs for inductive sensors in half- or full bridge configuration and for differential transformers.
  • The signal inputs are differential inputs, galvanically isolated from the system supply, open circuit and short circuit proof.

• Max. Input Voltage:

  • 3.6 V (protected against over voltages)

• Nominal Input Voltage Range:

  • 2.5 V rms

• Input Impedance:

  • 200 kOhm

• Measuring Ranges:

  • Measuring frequency range: 0....100 Hz -3dB
  • Measuring range displacement measurement: Depending on transducer measuring range; one or both outputs may be inverted.

• Sensor Supply:

  • Each input includes a separate, buffered output to supply inductive sensors.
  • Carrier Frequency: 4.75 kHz
  • Nominal Supply Voltage: 4 Vrms
  • Permissible Load: 120....600 Ohm
  • The outputs are balanced to ground, open-circuit and short-circuit proof.

• Control Inputs:

  • Common logical binary inputs for the two channels.
  • Optocoupler Mode:
    • "Pre-alarm (ALERT)", open circuit or closed circuit mode
    • "Main alarm (DANGER)", open circuit or closed circuit mode
    • Channel or module inhibit
    • Limit value multiplier for changing alarm limits during run-up and run-down of the machine, adjustable in the range: 1.000....4.999
    • 24 V Logic
    • Input Resistance: > 10 kOhm

• Key Pulse Input:

  • 1 pulse per revolution for analysis purposes of the system.
  • 24 V Logic
  • Input Resistance: > 30 kOhm
  • Pulse Duration: min. 10 µs (edge-triggered)

Signal Outputs at the Connecting Strip

• Connecting Strip: according to type F48M, DIN41612
• Communication Interface: RS485
• Outputs:
  • Current Output per Channel:
    • Nominal range: 0/4...20 mA
    • Open circuit and short-circuit proof
    • Permissible Burden: ≤500 Ohm
    • Resolution: 16 Bit
    • Accuracy: ±1% of f.s.d.
  • Voltage Output per Channel:
    • Nominal range: 0...+10 V
    • Open circuit and short-circuit proof
    • Load Resistance: ≥10 kOhm
    • Resolution: 8 Bit
    • Accuracy: ±1 % of f.s.d
  • Voltage Output per Channel (Sensor Signal):
    • Nominal range: 0...12 Vpp
    • Open circuit and short-circuit proof
    • Load Resistance: ≥100 kOhm
    • Frequency Range: 0 Hz...20 kHz (±20 % -3 dB)
    • Accuracy: ±1 % of f.s.d

Operating Elements at the Module Front

• Two sensor signal outputs, independently from each other, one for each channel.
• The signals are proportional to the sensor signals and can be tapped at the SMB sockets on the module front.
• Range: ±12 V
• Load Resistance: 100 kOhm
• Internal Resistance: 1 kOhm
• Frequency Range: Dynamic carrier frequency output with superimposed displacement signal.
• LED Indicators:
  • 2 green LEDs for "Channel Clear" separately for channel 1 and channel 2.
  • 4 red LEDs for pre and main alarm separately for both channels.
• Mini DIN Diode Socket: RS232 interface for connection of a computer for configuration and data interchange with the module.
• Handle: To pull out and insert the module and for labeling purposes.

Power Supply

• System Design: Redundant supply input via two supply inputs, decoupled via diodes. At least one supply input is required for the supply of the module.
• Supply Voltage: 18....24....31.2 V DC according to IEC 654-2, class DC4
• Power Consumption: max. 8 W (max. 300 mA at 24 V)
• Other supply voltages can be realized with additional system power supplies.
• At standalone operation, an unlimited number of modules.
• Max. 31 modules / 62 channels may be operated at one RS 485 bus.
• If more modules / channels are necessary, e.g. with an MMS 6815, another RS 485 bus must be installed.

Environmental Conditions

• Protection Class:
  • Module: IP 00 according to DIN 40050
  • Front Plate: IP21 according to DIN 40050
• Climate Conditions: according to DIN 40040 class KTF
• Operating Temperature Range: 0....+65°C
• Temperature Range for Storage and Transport: -30....+85°C
• Permissible Relative Humidity: 5....95%, non-condensing
• Permissible Vibration: according to IEC 68-2, part 6
  • Vibration Amplitude: 0.15 mm in range 10...55 Hz
  • Vibration Acceleration: 16.6 m/s² in range 55...150 Hz
• Permissible Shock: according to IEC 68-2, part 29
  • Peak Value of Acceleration: 98 m/s²
  • Nominal Shock Duration: 16 ms
• EMC Resistance: according to EN50081-1 / EN50082-2

Dimensions

• PCB/EURO Card Format: acc. to DIN 41494 (100 x 160 mm)
• Width: 30.0 mm (6 TE)
• Height: 128.4 mm (3 HE)
• Length: 160.0 mm
• Net Weight: approx. 320 g
• Space Requirements: 14 modules (28 channels) fit into each 19“ rack