The ABB DP640, also cataloged as the DP640 Rotational Speed Meter Module, operates as a dedicated hardware component for high-frequency pulse processing and overspeed safety monitoring tasks within ABB Advant Master S600 I/O system networks.
Hardware Specifications
Parameter
Specification
Model
DP640
Brand
ABB
Product ID
3BHT300057R1
Origin
Sweden
Weight
1.33 kg
Dimensions
40 mm x 273 mm x 252 mm (W x H x D)
Channel Type
DI (Digital Input - Speed Meter Specific)
Number of Input Channels
2 speed meter inputs
Maximum Input Frequency
50 kHz
Signal Operational Levels
5 VDC or 24 VDC (+/-13 mA)
Overspeed Trip Outputs
Solid-state (24 VDC) and Dry contact (60 VDC)
Isolation
Individual opto-isolation for speed inputs and solid-state output
Battery Requirement
0 batteries
Environmental Compliance
RoHS Exempted (Article 2(4)), WEEE Category 5
Customs Tariff Number
85389091
Backplane Bus Communication Velocity and Network Determinism
The DP640 tracks dynamic rotational metrics by processing inputs up to 50 kHz independently from the main controller scan interval. It decodes rotational direction in real time using its synchronized second speed input channel. The integrated hardware overspeed trip logic triggers its dedicated solid-state and dry contact outputs instantly when pre-set limits are crossed, avoiding any backplane bus communication velocity latency. This local execution pattern keeps safety-critical trip delivery isolated from active network load spikes or firmware flash compatibility variations on the shared platform.
