S800 I/O is a comprehensive, distributed and modular process I/O system that communicates with parent controllers and PLCs over industry-standard field buses. The S800 supports two pulse counter cards, the DP820 and the DP840. 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. DP840 has 8 channels and each channel can be configured for pulse count or frequency measurement. The maximum frequency of input signals is 20 kHz and the inputs can also be read as digital input signals. The input signal range for the DP840 is according to the NAMUR standard.

S800 I/O modulesPulse, frequency and NAMUR inputs

Data sheet

Feature DP820 Feature DP840

Number of channels 2 Number of channels 8

Input type Pulse counting and frequency mea-surement, Each channel have A, B, ST and DI inputs

Input type Pulse counting, frequency mea-surement or normal binary input selectable per channel

Power Supply voltage 24 V d.c. (12...32 V d.c.) Power Supply voltage 24 V d.c. (19.2...30 V d.c.)

Max non-destructive voltage on inputs A, B, ST or DI

30 V d.c. Max non-destructive voltage on inputs

30 V d.c.

I/O redundancy possible No I/O redundancy possible Yes

Front LED’s P(ulse)X, UP (direction), ST(robe), DI, SY(nch), DO, TP (transm. power OK), all per channel

Front LED’s F(ault), R(un), W(arning), P(rimary), Channel 1-8 P(ulse) and F(ault)

Supervision Process voltage per channel Supervision Process voltage

Output Set as Predetermined (OSP) timer

256, 512, 1024 ms

Status indication of supervision Module Error, Module Warning, Channel error

Status indication of supervision Module Error, Module Warning, Channel error

PROFIBUS parameter bytes (User/Input/Output) 12/18/13

PROFIBUS parameter bytes (User/Input/Output) 10/34/0

Execution time per scan using CI801 or CI840

1.72 ms Execution time per scan using CI801 or CI840

3.00 ms, 6.00 ms for a redundant pair

Number of scan cycles per value update

1 Number of scan cycles per value update

1

Maximum field cable length 200 m Maximum field cable length 200 m

Cable typeCharacteristic impedance

Shielded, twisted pair100 (+/- 25%) ohm

Cable type Twisted pair (1)

2 Pulse, Frequency and NAMUR inputs | Data Sheet

Feature DP820 Feature DP840

Configurable input filters Input A and B Input ST Input DI

Unfiltered or 1 µs 1 µs or 1 ms 1 ms or 5 ms

Frequency range 10 µs input filter: 0.5 Hz - 20 kHz 100 µs input filter (2): 0.5 Hz - 5 kHz 800 µs input filter (2): 0.5 Hz - 625 Hz 6400 µs input filter (2): 0.5 Hz - 78 Hz

Max input frequency / Min pulse width, input A and B RS422/+5 V /13 mA - range Filter = unfiltered Pulse encoding = u/d or c/d Pulse encoding = quadrature Filter = 1 µs Pulse encoding = u/d or c/d Pulse encoding = quadrature

1.5 MHz / 333 ns750 kHz / 667 ns 200 kHz / 2.5 µs 100 kHz / 5 µs

Min pulse width (“1” or “0”) 10 µs input filter: 10 µs 100 µs input filter: 100 µs 800 µs input filter: 800 µs 6400 µs input filter: 6400 µs

Max input frequency / Min pulse width, input A and B 12 V - range (only TU830) Filter = unfiltered Filter = 1 µs Pulse encoding = u/d or c/d Pulse encoding = quadrature

Not allowed

200 kHz / 2.5 µs100 kHz / 5 µs

Input thresholds, NAMUR Open wire: Iin< 0.1 mA Contact open: 0.1 mA < Iin< 1.6 mA Contact closed: 1.6 mA < Iin< 6.0 mA Short circuit: Iin > 6.0 mA

Max input frequency / Min pulse width, input A and B 24 V - range (only TU830) Filter = unfiltered Filter = 1 µs Pulse encoding = u/d or c/d Pulse encoding = quadrature

Not allowed 200 kHz / 2.5 µs 100 kHz / 5 µs

Input thresholds, 12 V / 24 V With external resistor for cable supervision

Open wire: Vin < 0.1 V Contact open: 0.1 V < Vin < 1.6 V Contact closed: 1.6 V < Vin < 6.0 V Short circuit: Vin > 6.0 V

Max. input frequency/Min. pulse width, input ST, all voltage ranges Filter = 1 µs Filter = 1 ms

200 kHz / 2.5 µs1 kHz / 500 µs

Input threshold, 12 V No resistors for cable supervi-sion

Contact open: Vin < 5.0 V Contact closed: Vin > 5.0 V

Max. input frequency/Min. pulse width, input DI Filter = 1 µs Filter = 1 ms

1 kHz / 500 µs 0.1 kHz / 5 µs

Input threshold, 24 V No resistors for cable supervi-sion

Contact open: Vin < 8.3 V Contact closed: Vin> 8.3 V

Input impedance, A, B and ST -inputs RS422/+5 V /13 mA - range12 V - range (only TU830) 24 V - range (only TU830)

100 Ω (1) characteristic impedance1 kΩ2 kΩ

Maximum pulse frequency 20 kHz (3)

Input impedance, DI - input 2.5 kΩ Input impedance NAMUR: 1 kΩ, +/-10% 12 V range: 2.8 kΩ, +/-10% 24 V range: 4.0 kΩ, +/-10%

Input signal voltage range Input A, B, ST RS422/+5 V /13 mA - range “1” “0” 12 V - range (external resistance) (2) “1” “0” 24 V - range (only TU830) (3) “1” “0” Input DI “1” “0”

2.5 V to 30 V -30 V to 1.0 V 8 V to 30 V -30 V to 2.0 V 15 V to 30 V -30 V to 5.0 V 15 V to 30 V -30 V to 5.0 V

Hysteresis (Ion - Ioff) / Input threshold: >20% or (Von - Voff) / Input threshold: >20%

Digital output, max. load current 0.5 A Sensor supply voltage level (max. 20 mA/channel)

NAMUR: 8.2 Vx, +/-10% 12 V range: 12 V +/-10% 24 V range: VL+ - (3.0 +/-1.0) V

Digital output, max. short circuit current

2.4 A Sensor supply current limit All ranges: <40 mA (single) <80 mA (redundant)

Digital output, max. leakage current

10 µA Max. measurement error, frequency measurement

Max relative error (4): PRIT = 10 ms: 300 ppm PRIT = 20 ms: 150 ppm PRIT = 50 ms: 60 ppm PRIT = 100 ms: 30 ppm Max error in crystal oscillator: 120 ppm + 5 ppm/year Max absolute error = rel. error + oscillator error (PRIT = 10 ms, age < 16 year): 500 ppm (= 0.05%)

Data Sheet | Pulse, Frequency and NAMUR inputs 3

Feature DP820 Feature DP840

Digital output, max. output impedance

0.4 Ω Min. sampling interval when used in pulse count mode

fMAX - Maximum expected input frequency: 216 * (1/fMAX) fMAX = 20 kHz: 3.27 s

Max. frequency measurement error Relative error Absolute error (Temperature drift included)

[320/(MEASTIMEx in ms)] ppm [(320/(MEASTIMEx in ms) +100] ppm

Synchronization accuracy +/-1 pulse

DP820 current consumption, +5 V

120 mA DP840 current consumption, +5 V

115 mA

Isolation Individually isolated channels External power supply consumption (Internal load + external load)

NAMUR = 56 + 0.5 x external load [mA] 12 V = 89 + 0.7 x external load [mA] 24 V = 97 + external load [mA]

External power supply 24 V d.c. (19.2 to 30 V d.c.)

Power dissipation 2.5 W Power dissipation 4 W

Maximum ambient temperature 55/40°C, (131/104°F) (4) Maximum ambient temperature 55/40°C (131/104°F) (5)

Module termination units, single applications

TU810, TU812, TU814, TU830 or TU833

Module termination units, single applications

TU810, TU812, TU814, TU830, TU833

Module termination units, redundant applications

Module termination units, redundant applications

TU842/TU843 or TU844/TU845

MTU keying code CB MTU keying code CF

Dielectric test voltage 500 V a.c. Dielectric test voltage 500 V a.c.

Rated insulation voltage 50 V Rated insulation voltage 50 V

Equipment class Class I according to IEC 61140; (earth protected)

Equipment class Class I according to IEC 61140; (earth protected)

Protection rating IP20 according to IEC 60529 Protection rating IP20 according to IEC 60529

Width 45 mm (1.77”) Width 45 mm (1.77”)

Depth 102 mm (4.01”), 111 mm (4.37”) including connector

Depth 102 mm (4.01”), 111 mm (4.37”) including connector

Height 119 mm (4.7”) Height 119 mm (4.7”)

Weight 0.15 kg (0.33 lbs.) Weight 0.15 kg (0.33 lbs)

Corrosive atmosphere ISA-S71.04

G3 Corrosive atmosphere ISA-S71.04

G3

CE mark Yes CE mark Yes

El. safety, Haz loc, C1 Zone 2 cULus El. safety, Haz loc, C1 Zone 2 cULus

El. safety, Haz loc, C1 Div 2 CSA, FM El. safety, Haz loc, C1 Div 2 No

ATEX 100A Zone 2 Category 3 (1) G

No ATEX 100A Zone 2 Category 3 (1) G

No

GOST certificates CoC, GGTN GOST certificates CoC, GGTN

SIL3 according to EN 61508. No SIL3 according to EN 61508. No

Certified for AK6 according to DIN V 19250 / DIN V VDE 0801-AK6.

No Certified for AK6 according to DIN V 19250 / DIN V VDE 0801-AK6.

No

Certified for Category 4 according to EN 954-1.

No Certified for Category 4 according to EN 954-1.

No

(1) Load 20 mA at 5 V, 8 mA at 2.5 V(2) With TU830 external resistor 1.8 kΩ, see Figure A-115. With TU810, TU814 external resistor ca 920 Ω, see Figure A-112.(3) With external resistor also TU810, TU814 External resistor 1.8 kΩ, see Figure A-112.(4) 40°C (104°F) applies to compact MTUs with I/O-modules or S800L-modules mounted on vertical DIN rail.

(1) Shielded cables for 2-wire transmitters(2) Symmetric input pulse (i.e. 50% duty cycle)(3) Input channel pulse supervision does not work with pulse frequency <2 Hz(4) Relative error - Max difference in frequency measurement between two channels on the same module connected to the same source.(5) 40°C (104°F) applies to compact MTUs with I/O-modules.

DP 820 DP 840

Electrical safety EN 3810, EN 50178, IEC 601131-2, UL 508, CSA 22.2 No.142-M1987

Hazardous Classified Locations CSA 22.2 No.213-M1987, FM 3600, FM 3611, UL 1604

Climatic operating conditions 0 to +55 °C (Storage -25 to +70 °C), RH=5 to 95 % no condensation, IEC/EN 61131-2

Pollution degree Degree 2, IEC 60664-1

Mechanical operating conditions IEC/EN 61131-2

EMC EN 55011, CISPR 11

Immunity IEC/EN 61000-4-2 to -8

Overvoltage Categories IEC/EN 60664-1, EN 50178

3BS

E03

9125

en

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