D421.50 pages
D421.5
Speed Alarms with optional Analog Output
Series D421.51 / D421.52
BRAUI
24 23 22 21 20 19
PE -TL s
18 17 16 15
OV U3 U2 mV
D| BRAUN GMBH
U% INDUSTRIE-ELEKTRONIK
r
235,64
c o
POWER STARTER SP1
SP2 ANALOG
| „_ | „_ OUTPUT
D421.51 Front View
Fast, precise and safe - from zero motion to highest speed
The BRAUN Speed Alarm Series D421.5 measures the frequency (or any other physica
quantity which can be transmitted as a pulse train) of the input signal and converts it into
two setpoint alarms and, if required, into an 0/4.. .20 mA analog output. Programmable
in conversion characteristics and outputs
KEY FEATURES
■ 2 Speed Alarms as SPDT contacts
■ Setpoints and their response
characteristics individually
programmable over the entire range
from zero to high speed
■ Measuring principle combining
programmable fast response and
averaging within wide limits
■ Frequency range 0 Hz. ..100 kHz
■ Control signal for start-up suppression
■ 1 Analog Output 0/4.. .20 mA (option)
■ 5 digit LCD display (8 mm)
■ Universal Inputs, also for magnet
nductive sensors (MPUs)
■ Square wave pulse output
BENEFITS
■ Fast, precise and safe
■ Maintenance-free during Lifetime,
therefore minimized TCO
■ Precise adjustment to the application
data on site at the unit, by 5 digit
scaling factor
Characteristics features are extremely wide range, fast tracking response by pulse
nterval measurement, free programmable conversion parameters, and electronic
programming by keys, with display assistance
The signal input is designed to accept a wide range of transmitters: contact free speed
sensing probes, incremental encoders, pulse wheel transmitters. Any flowmeter pulse
signal output can be converted into an analog flowrate signal
Display, setpoints and analog output may be assigned to any measured quantity. During
its lifetime cycle the speed alarm is completely maintenance-free.
BRAUN
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