The DP840 module consists of 8 identical independentchannels.
Each channelcan be used for pulse count or frequency(speed)
measurement, maximum20 kHz. The inputs can also be read as DI
signals. Each channel has a configurable inputfilter. The module
performself-diagnostics cyclically. With advanced diagnostics,for
single or redundant applications. Interface for NAMUR,12 V and 24 V.
The inputcan be read as digital input signals.
Use DP840 with Module Termination Units TU810V1, TU812V1,
TU814V1, TU830V1, TU833.
Features and benefits
8 channels
The modules can be used in both single and redundant applications
Interface for NAMUR,12 V and 24 V transducer signal levels
Each channelcan be configured for pulse count or frequency measurement
The inputs can also be read as DI signals
Pulse count by accumulation in a 16 bitcounter
Frequency(speed) measurement 0.5 Hz - 20 kHz
Advanced on-board diagnostics
General info
Article number 3BSE028926R1
Type Pulse counter
Signal specification 24V d.c. (19.2 -32 V d.c.)
Number ofchannels 8
HART No
SOE No
Redundancy Yes
High integrity No
Intrinsic safety No
Mechanics S800
Detailed data
Isolation Groupwise isolated from ground
Error
Max relative error (4): PRIT = 10ms: 300 ppm PRIT = 20ms:150 ppm PRIT =
50ms: 60 ppm PRIT = 100ms: 30 ppm Max error in crystal oscillator:120
ppm + 5 ppm/year Max absolute error = rel. error + oscillator error (PRIT =
10ms, age < 16 year): 500 ppm (= 0.05%)
Current limiting Built in current limited sensor power
Maximum field cable length 200meters (218 yards)
Rated insulation voltage 50 V
Dielectrictestvoltage 500 V a.c.
Power dissipation 4W
Currentconsumption +5 VModulebus 115 mA
Currentconsumption +24V external
NAMUR = 56 + 0.5 x external load [mA]12 V = 89 + 0.7 x external load [mA]
24V = 97 + external load [mA]
Shipping Port: China
Payment: Bank of Chicago, Bank of Singapore
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Service: Professional Sales provides 24 hours /7 days online service
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