Series D521.xx
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Single Channel Speed Monitor for Rotating Equipment with SIL1 requirements Series D521.xx KEY FEATURES SIL1 / IEC 61508:2010 compliant Single Channel Monitor with sensor monitoring and self-test function Frequency range 0 Hz…50 kHz 1 Analog Output (option) Bright red digital LED display 2 Alarm Outputs as SPDT relays (option) 2 Alarm Outputs as PhotoMOS relays (option) Universal Input, also for magnet inductive sensors (MPUs) Square wave Pulse Output USB 2.0 Data Interface D521 System Front View Fast, precise and safe – from zero motion to highest speed The BRAUN Single Channel Speed Monitor Series D521 for increased safety requirements monitors motors, pumps, feeders, gears, rollers and small turbines and provides protection against overspeed at any required value of rotational speed, including standstill. The signal input is universally designed. It fits for BRAUN A5S… sensors, as well as NAMUR type sensors, tacho generators 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. Two Monitors, suitably configured with their output contacts 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 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 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 entire system 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. www.braun-tac

Specifications of D521.xx Conformity to Standards Directives Standards 2014/30/EU (EMC Directive) EN 61000-6-4, EN 61326-3-2 2014/35/EU (Low Voltage Directive) EN 61010-1 2011/65/EU (RoHS Directive) EN 50581 SIL1 acc. IEC 61508:2010, EN ISO 13849:2008; PLc Measuring Principle Accuracy Response Frequency measurement, based on the input pulse distance, extended over a minimum period of time, programmable 5 milliseconds…9.999 seconds. ±0.005% of value ±1 in last digit 1 input pulse interval + programmed minimum time + 5 milliseconds Analog Output (option) Range Resolution Drift by temperature...

Function diagram and connections of D521.xx D/A-converter and analog output Analog output reference to starter signal high = starter active (12…24 V) switch capability maximum 250 V / 2 A /100 W provide overload protection at inductive loads contacts shown in state de-energized position 3 switching capability max. 60 Vdc / 0.1 A electronic outputs, shown in their non-conducting state Input and sensor supply with monitor Sensor supply +U mV* - signal input pulse output 1 high-level approx. 10 V reference = terminal 18 input reference *mV = high sensitive, *V = Volt-level see specifications...

Examples: D521.02 : without Analog Output, 2 Alarms with SPDT contacts Analog Output a = 0 : without Analog Output a = 1 : 1 Analog Output D521.04 : without Analog Output, 2 Alarms with SPDT contacts + 2 with PhotoMOS contacts Alarm Outputs b = 0 : no output contacts b = 2 : 2 with SPDT contacts b = 4 : 2 with SPDT contacts + 2 with PhotoMOS contacts Enclosure c = suffix „-G” : field mounting enclosure with transparent cover (omit if not required) with 1 Analog Output, no output contacts D521.12 : with 1 Analog Output, 2 Alarms with SPDT contacts D521.14 : with 1 Analog Output, 2 Alarms...