Emerson MMS 6350 EPRO PROFIBUS DP Interface DOPS

Description

The Digital Overspeed Protection System (DOPS) with an optional PROFIBUS-DP interface is designed to provide high reliability and safety in monitoring and controlling overspeed conditions in various industrial applications. The system includes models DOPS, DOPS AS, and DOPS TS, with DOPS and DOPS AS being SIL3-certified. This microcontroller-based 3-channel measuring system ensures high safety levels through features such as password protection, redundant power supplies, and comprehensive self-test functions.

Features

• SIL3 Certification: Systems DOPS and DOPS AS are SIL3-certified.
• Optional PROFIBUS-DP Interface: Allows integration with PROFIBUS-DP networks.
• 3-Channel Measuring System: Microcontroller-based for precise measurement.
• High Safety Level: Achieved through password protection on each monitor.
• Multiple Limit Values: Up to 6 limit values per channel.
• Current Outputs: Two current outputs per channel, one electrically isolated.
• Pulse Comparison: Mutual comparison of pulses and output signals between channels.
• Redundant Power Supplies: Ensures continuous operation of monitors and backplane.
• Self-Test Functions: For electronic circuits and sensors.
• Simplified Fault Detection: Display messages in plaintext.
• Electrical Isolation: Binary input and output signals are electrically isolated.
• Easy Wiring: Preformed cables and converters for control cubicle wiring.
• Communication Interfaces: Includes RS 232 for parameter input and RS 485 for data exchange.
• Hot Swap Capability: Boards can be replaced during operation without system downtime.

Specifications

Signal Input:

• Type: Differential input, non-reactive, open-circuit and short-circuit proof.
• Voltage Range: 0...30 VDC
• Input Resistance: >100 kOhm

Sensor Signal Output:

• Type: Decoupled, open circuit and short circuit proof, non-reactive, not calibrated.
• Voltage Range: 0....4.1 Vpp
• Amplitude: Sensor signal x (-0.15)
• Accuracy: ±1% of full scale
• Frequency Range: 0...16 kHz (-3 dB) ±20 %
• Permissible Load Resistance: >1 MΩ
• Internal Resistance: 10 kOhm

Dynamic Outputs:

• Type: TTL pulses, open circuit and short-circuit proof, non-reactive.
• Nominal Range: TTL level, 5 VSS
• Frequency Range: 0 Hz...20 kHz
• Permissible Load Resistance: > 1 MΩ
• Internal Resistance: 5.1 kΩ

Pulse Output (Pulse-C, Pulse-E):

• Type: Potential-free optocoupler outputs, in phase with the input signal.
• Max. Voltage (DC): +48 VDC on collector
• Max. Current: 25 mA

Signal Conditioning:

• Max. Measuring Range: Limited to 20 kHz by the max. input signal frequency
• Max. Speed: 65,535 rpm
• Max. Number of Teeth: 255 (with Nmax = 4700 rpm)

Current Outputs:

• Current Output 1 (Iout1): 0/4....20 mA / 20....4/0 mA, electrically isolated.
  • Measuring Error: ±0.1% of full scale, 16-bit resolution
• Current Output 2 (Iout2): (Not available for DOPS TS) 0/4....20 mA / 20....4/0 mA
  • Accuracy: ±0.1% of full scale, 16-bit resolution

Channel Supervision and Visualization:

• Fault Indication: Two green LEDs at the monitor front.
• Signal Outputs: Opto-decoupled voltage outputs for channel supervision.
• Voltage Output: +24 VDC = High state, 0 VDC = Low state
• Max. Current: 25 mA (current limitation)

Binary Inputs:

• Type: Electrically separated from system ground, common reference point.
• Signal Level: "Low": 0....+3 V, "High": +13....+32 V
• Max. Input Voltage: +/- 35 V
• Input Resistance: 6.8 kOhm

Binary Outputs:

• Voltage Range: Uout "High" = +18….32 V, Uout "Low" = 0…+3.5 V
• Max. Current: 25 mA
• Current Consumption: Max. 280 mA

Relay Outputs:

• Max. Voltage: 48 VDC, 20 Vrms AC
• Max. Current: 4 AAC, DC
• Cable Cross-Cut: 1.5 mm²

Communication Interfaces:

• RS 232: For configuration and visualization.
• RS 485: Bus interface for communication with external systems.
• PROFIBUS-DP: Optional connection via SUB-D plug on front plate.

Sensor Supply:

• Type: Decoupled and electrically isolated.
• Supply Voltage: 26.75 VDC
• Max. Current: 38 mA
• Residual Ripple: < 20 mVSS

Module Supply:

• Redundant Inputs: Nominal +24V with common ground.
• Current Consumption: Max. 250 mA per card (with display)
• Voltage Range: 18....32 VDC

Mechanical Design:

• PCB Size: Euro-Format (100 x 160 mm)
• Width: With display: 14 TE (approx. 71 mm), without display: 6 TE (approx. 30 mm)
• Connector: DIN 41 612, type F 48 M
• Total System Dimensions: DOPS, DOPS AS, DOPS TS: 42 TE (approx. 213 mm)