Series D521

Single Channel Speed Monitor D521 for increased safety requirements up to SIL1

The BRAUN Single Channel Speed Monitor Series D521.xx monitors motors, pumps, feeders, gears, rollers, and small turbines. It provides protection against overspeed at any required value of rotational speed, including standstill.
The universally designed signal input fits perfectly with BRAUN A5S… sensors or equivalent. However, it can also be used with NAMUR-type sensors, tacho generators, incremental encoders, or magnet-inductive sensors (MPUs).

With single-channel processing (1oo1) safety provision is solely determined by the device configuration. Therefore the use of sensor monitoring with integrated plausibility control is essential. In such a case no redundancy is provided. Should a fault be detected, the entire system will be shut down immediately.
With two-channel systems, there is a choice of implementation, dependent upon requirements. In principle, the two monitors operate in parallel yet independently. Alarm indication can be realized through the linkage of their Alarm Outputs.

For 1oo2 processing, we have system redundancy with enhanced safety through comparative diagnosis. In the case of fault detection, the entire system will be shut down. With 2oo2 processing, we still have system redundancy but with enhanced availability. Only if both monitors fail, the system as a whole will be shut down.
The D521 Speed Monitor permanently monitors the speed sensors for their correct function. During its complete lifetime cycle, the Monitor does not require any external proof tests and is completely maintenance-free.

Key Features

• Single Channel Monitor with sensor monitoring and self-test function
• Frequency range 0 Hz…50 kHz
• Universal Signal Input, also for Magnetic Pick-Up sensors (MPUs)
• 1 Analog Output 0/4…20 mA or 0/2…10 V (for versions D521.10, D521.12, D521.14)
• Bright red digital LED display
• 2 Alarm Outputs as SPDT relays (for versions D521.02, D521.04, D521.12, D521.14)
• 2 Alarm Outputs as PhotoMOS relays (for versions D521.04, D521.14)
• Square wave Pulse Output
• USB 2.0 Data Interface
• Two Monitors, suitably configured with their Alarm Outputs linked together, may provide a protection system with 1oo2 or 2oo2 redundancy
• Universal Power Supply range 20…265 Vuc

Benefits

• Fast, precise, and safe
• Maintenance-free during the lifetime, therefore minimized TCO
• Universal range of application, throughout mechanical and electrical engineering, in the chemical industry, in power plants, and at test stands
• Increased safety with 1oo2 architecture
• Maximum availability with 2oo2 architecture

Series D225

Single Channel Monitor series D225 for measurement of speed + detection of direction with fault indication for increased safety requirements up to SIL1

The BRAUN Speed and Direction Monitor Series D225.xx simultaneously measures one speed value and the direction of speed with fault indication. The specially designed signal input fits perfectly with our proven Differential-Hall-Effect based A5S… sensors. Either with speed and direction signal (A5S…3) or two-phase shifted speed signals (A5S…4).

Display, setpoints, and analog output may be adjusted to any speed. During its life cycle, the monitor is completely maintenance-free.

Key Features

• Speed and Direction Monitor with sensor monitoring and self-test function
• Frequency range 0 Hz…50 kHz
• 1 Analog Output 0/4…20 mA
• Bright red digital LED display
• 4 Alarm Outputs via relay contacts
• Signal Input for A5S sensors with speed and direction signal or two-phase shifted speed signals
• RS232 Parameterisation Interface (for version D225.11)
• PROFIBUS Data Interface (for version D225.12)
• Universal Power Supply range 20…265 Vuc

Benefits

• Fast, precise, and safe
• Maintenance-free during the lifetime, therefore minimized TCO
• Rapid and accurate response through period measurement

Series D224

Dual Channel Monitor series D224 for measurement of speed and ratio for increased safety requirements up to SIL1

The BRAUN Speed and Ratio Monitor Series D224.xx receives input signals from speed sensors or flow rate transmitters. The two specially designed signal inputs fit perfectly to our proven A5S… sensors. However, they can also be used universally to accept any other sensor signal.

The monitor simultaneously measures one or two speed values (or other quantities transmitted as frequency) and computes their ratio or difference or sum to read and monitor stretch/shrinkage or blend ratio, for instance.

Display, setpoints, and analog output may be adjusted to any speed. During its life cycle, the monitor is completely maintenance-free.

Key Features

• Speed and Ratio Monitor with sensor monitoring and self-test function
• Frequency range 0 Hz…50 kHz
• 1 Analog Output 0/4…20 mA
• Bright red digital LED display
• 4 Alarm Outputs via relay contacts
• 2 Signal Inputs for connection with two A5S series sensors or
• 2 Universal Signal Inputs, also for Magnetic Pick-Up sensors (MPUs)
• RS232 Parameterisation Interface (for version D224.11)
• PROFIBUS Data Interface (for version D224.12)
• Universal Power Supply range 20…265 Vuc

Benefits

• Fast, precise, and safe
• Maintenance-free during the lifetime, therefore minimized TCO
• Rapid and accurate response through period measurement