1. General Introduction
DP820 is a two-channel pulse counting module for incremental pulse transmitters up to 1.5 MHz. Each channel contains counters and registers for position/length and speed/frequency measurement. Each channel provides three balanced inputs for connection of a pulse transmitter, one digital input and one digital output. Pulse transmitters with RS422, +5 V, +12 V, +24 V and 13 mA interfaces can be connected to DP820.
Use DP820 with Module Termination Units TU810V1, TU812V1, TU814V1, TU830V1, TU833
2. Specification of DP820
General info | |
Type | Pulse counter |
Signal specification | 24 V d.c. (12 - 32 V d.c.) |
Article number | 3BSE013228R1 |
Number of channels | 2 |
HART | No |
SOE | No |
Redundancy | No |
High Integrity | No |
Intrinsic safety | No |
Mechanics | S800 |
Detailed data | |
Input impedance | 2.5 kΩ (DI-input) |
Isolation | Individually isolated, channel-to-channel and to circuit common |
Error | Max. frequency measurement error Relative error Absolute error (Temperature drift included): [320/(MEASTIMEx in ms)] ppm [(320/(MEASTIMEx in ms) +100] ppm |
Current limiting | Sensor power can be current limited by the MTU |
Rated insulation voltage | 50 V |
Dielectric test voltage | 500 V a.c. |
Power dissipation | 2.5W |
Current consumption +5 V Module bus | 120mA |
Current consumption +24 V Modulebus | 0 |
Current consumption +24 V external | 0 |
Diagnostics | |
Front LED’s | P(ulse)X, UP (direction), ST(robe), DI, SY(nch), DO, TP (transm. power OK), all per channel |
Supervision | Process voltage per channel Fault sense current < 4 mA |
Status indication of supervision | Module Error, Module Warning, Channel error |
Environmental and certification | |
CE mark | Yes |
Electrical safety | IEC 61131-2, cFMus |
Hazardous location | ATEX/IECEx Zone 2 with interface to Zone 0, cFMus C1, Div 2/Zone 2 with interface to C1, C2, C3 Div 1/Zone 0 |
Marine certification | ABS, BV, DNV-GL, LR, RS, CCS |
Protection rating | IP20 according to IEC 60529 |
Corrosive atmosphere ISA-S71.04 | G3 |
Climatic operating conditions | 0 to +55 °C (Storage -25 to +70 °C), RH=5 to 95 % no condensation, IEC/EN61131-2 |
Pollution degree | Degree 2, IEC 60664-1 |
Mechanical operating conditions | IEC/EN 61131-2 |
EMC | EN 61000-6-4 and EN 61000-6-2 |
Overvoltage categories | IEC/EN 60664-1, EN 50178 |
Equipment class | Class I according to IEC 61140; (earth protected) |
Max ambient temperature | 55 °C (131 °F), for vertical mounting 40 °C (104 °F) |
RoHS compliance | DIRECTIVE/2011/65/EU (EN 50581:2012) |
WEEE compliance | DIRECTIVE/2012/19/EU |
Comp ability | |
Use with MTU | TU810, TU812, TU814, TU830 or TU833 |
Keying code | CB |
Dimensions | |
Width | 45 mm (1.77”) |
Depth | 102 mm (4.01”), 111 mm (4.37”) including connector |
Height | 119 mm (4.7”) |
Weight | 0.15 kg (0.33 lbs.) |
3. Selection table of Pulse counters
Name | HART | High Integrity | Intrinsic safety | Mechanics | Redundancy | SOE | Type |
DP820 | No | No | No | S800 | No | No | Pulse counter |
DP840 | No | No | No | S800 | Yes | No | Pulse counter |
