OM 502DC
OM 502DC
5 digit DC VOLTMETER / AMMETER
Type OM 502DC is a precise 5 digit panel programmable DC voltmeter and ammeter.The instrument is based on a single-chip microcontroller with a fast 24-bit sigma-delta converter, which ensures good accuracy, stability and easy operation of the instrument.
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5 DIGIT PROGRAMMABLE PROJECTION
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RANGE: ±99,999 mV; ±999,99 mV; ±9,9999 V; ±99,999 V; ±300,00 V
±999,99 µA; ±9,9999 mA; ±99,999 mA; ±999,99 mA; ±5,0000 A -
ACCURACY 0,02 %, RATE 100 MEASUR./S
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DIGITAL FILTERS, TARE, LINEARIZATION, MATH. FUNCTIONS
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SIZE OF DIN 96 x 48 mm
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POWER SUPPLY 10…30 V AC/DC or 80…250 V AC/DC
Options
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comparators
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data output
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analog output
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measured data record
Input
DC
Range
±999,99 µA
< 300 mV
Input I
±9,9999 mA
< 300 mV
Input I
±99,999 mA
< 300 mV
Input I
±999,99 mA
< 50 mV
Input I
±5,0000 A
< 10 mV
Input I
±99,999 mV
1,8 MOhm
Input U
±999,99 mV
1,8 MOhm
Input U
±9,9999 V
1,8 MOhm
Input U
±99,999 V
1,8 MOhm
Input U
±300,00 V
1,8 MOhm
Input U
Projection
Display range
-99999…999999, single-coloured 14-segment LED
Display height
14 mm
Display colour
red, green
Signalizing LED
| 1, 2, 3, 4 | Limits L1, L2, L3, L4 (red) |
| T | Tare (green) |
| M | Min./Max. value (green) |
Description
the last two digits of the display can be used to display measured variables (only 14 mm display)
Decimal point
menu adjustable - fixed or floating
Display brightness
menu adjustable
Displayed values
| Kan A | Value from channel A |
| Fil. A | Value from channel A after digital filter adjustment |
| Mat. Fn. | Value of mathematical function |
| Max. | Maximum value |
| Min. | Minimum value |
Settings
Control
The device is controlled and set by five buttons on the front panel
Selected functions can also be controlled via external inputs
Selected functions can also be controlled via external inputs
Menu
| LIGHT | contains only items necessary for basic device settings with password access |
| PROFI | Full device settings with password access |
| USER | User menu of any item, selected from LIGHT/PROFI. Access without password. |
Optional functions
Buttons "Left", "Up", "Down", "Enter" can be assigned additional optional features
| ZAKAZ | button has no function |
| NUL. M.M. | Resetting Min/Max vaslues |
| NUL. TA. | Tare reset |
| MENU | Direct access to the selected menu item |
| DOC. H. | Temporary projection of selected values |
| TARA | Activating function Tare |
| ULOZ | Starting recording of the measured data into device memory |
| NUL. PA. | Resetting memory of the measured data |
OM Link
Company communication interface for operation, setting and update of device firmware
OM Link program is also designed for visualization and filing of meas. values from more instruments
OM Link program is also designed for visualization and filing of meas. values from more instruments
Instrument accuracy and functionality
Temperature coefficient
50 ppm/°C
Accuracy
±0,02 % of range + 1 digit
±0,05 % of range + 1 digit (DC - 1 A)
±0,1 % of range + 1 digit (DC - 5 A)
±0,05 % of range + 1 digit (DC - 1 A)
±0,1 % of range + 1 digit (DC - 5 A)
Rate
1…100 measur./s
Overload capacity
2x; 10x (t < 30 ms) - not for > 300 V and 5 A
Linearization
linear interpolation in 50 points (only via OM Link)
Digital filters
| arithmetic mean | from 2…100 measurements |
| floating mean | from 2…30 measurements |
| exponential mean | from 2…100 measurements |
| rounding | setting projection step for display |
Functions
| Tare | designed to reset display on non-zero input signal |
| Fixed tare | preset fixed tare |
| Min/max value | registration of min./max. value achieved during measurement |
| Peak value | display shows only max. or min. values |
Math. functions
polynom, 1/x, logarithm, exponential, power, root, sin x
Data record
Measured data recording into the memory
Not available in combination with with the data output MODBUS
| RTC | period - 1 s…1 day, time-date-display value, < 266k data, 15 ppm/°C |
| FAST | 40 records/s, display value, < 8k data |
Watch-dog
reset after 400 ms
Calibration
at 25°C and 40 % r.h.
Comparators
Type
Digital, menu adjustable, contact connect. < 30 ms
Mode
| Hysteresis | switch. point, hysteresis band "Mez ± 1/2 Hys." and time (0 ... 99.9 s) determ. switching delay |
| From-To | output interval ON and OFF |
| Dose | period, its multiples and time (0 ... 99.9 s), during which the output is active |
Output
1x relay, switch-over contact (250 VAC/30 VDC, 3 A)
2x relay, switch-over contact (250 VAC/30 VDC, 3 A)
1x relay, switch on contact (250 VAC/30 VDC, 3A)
2x relay, switch on contact (250 VAC/30 VDC, 3 A)
2x bistable relay (250 VAC/30 VDC, 3A)
3x relay, 2x switch on + 1x switch-over contact (250 VAC/30 VDC, 3A)
4x relay, 2x switch on + 2x switch-over contact (250 VAC/30 VDC, 3A)
2x open collector (30 VDC/100 mA)
4x open collector (30 VDC/100 mA)
2x open collector (30 VDC/100 mA) + 2x relay, CO contact (250 VAC/30 VDC, 3 A)
2x SSR (250 VAC/1 A)
2x relay, switch-over contact (250 VAC/30 VDC, 3 A)
1x relay, switch on contact (250 VAC/30 VDC, 3A)
2x relay, switch on contact (250 VAC/30 VDC, 3 A)
2x bistable relay (250 VAC/30 VDC, 3A)
3x relay, 2x switch on + 1x switch-over contact (250 VAC/30 VDC, 3A)
4x relay, 2x switch on + 2x switch-over contact (250 VAC/30 VDC, 3A)
2x open collector (30 VDC/100 mA)
4x open collector (30 VDC/100 mA)
2x open collector (30 VDC/100 mA) + 2x relay, CO contact (250 VAC/30 VDC, 3 A)
2x SSR (250 VAC/1 A)
Data outputs
Protocol
ASCII, MESSBUS, MODBUS - RTU, PROFIBUS DP
Data format
8 bits + no parity + 1 stop bit (ASCII)
7 bits + even parity + 1 stop bit (Messbus)
7 bits + even parity + 1 stop bit (Messbus)
Rate
600…230 400 Baud
0,0096…12 MBaud (PROFIBUS)
0,0096…12 MBaud (PROFIBUS)
RS 232
isolated
RS 485
isolated, addressing max. 31 instruments
Analogue outputs
Type
Isolated, programmable with a 16-bit D / A converter, type and range are menu selectable
Temperature coefficient
15 ppm/°C
Nonlinearity
±0,1 % of range
Rate
response to value change < 1 ms
Ranges
0...2 V, 0...5 V, 0...10 V, ±10 V, 0...5 mA, 0...20 mA, 4...20 mA
Compensation
600 Ohm/12 V, 1 000 Ohm/24 V
Error state
at range of 4...20mA
error message indication (<3.0 mA)
Detection of current loop interruption
error message indication (<3.0 mA)
Detection of current loop interruption
Sensor excitation
Adjustable
5…24 VDC/max. 1,2 W
Power supply
Power supply
10…30 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
80…250 V AC/DC, ±10 %, PF > 0,4, I < 40 A/1 ms, isolated
Current draw
< 8,0 W/7,8 VA
Power supply protection
Power supply is protected by a fuse inside the instrument
Operating conditions
Connection
connector terminal board, cable section < 1,5/2,5 mm2
Stabilization period
within 15 minutes after switch on
Operating temperature
-20°…60°C
Storage temperature
-20°…80°C
Protection class
IP64 (front panel only)
El. safety
EN 61010-1, A2
Dielectric strength
4 kVAC within 1 min. between pow. supply and input
4 kVAC within 1 min. between pow. supply and data/anal. output
4 kVAC within 1 min. between input and relay output
2,5 kVAC within 1 min.between input and data/anal. output
4 kVAC within 1 min. between pow. supply and data/anal. output
4 kVAC within 1 min. between input and relay output
2,5 kVAC within 1 min.between input and data/anal. output
Insulation resistance
for polution degree II, measuring cat. III.
| power supply | 670 V (ZI), 300 V (Di)* |
| input, output, PN | 300 V (ZI), 150 V (Di)* |
EMC
EN 61326-1
Mechanical properties
Material
Noryl GFN2 SE1, non-inflammable UL 94 V-I
Dimensions
96 x 48 x 120 mm (w x h x d)
Panel cutout
90,5 x 45 mm (w x h)
Images
Dimensions and installation
Connection
Datasheets
User manuals
Application notes
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Application note Handling RealTime memory
Aplikační list Obsluha pameti RealTima
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PDF
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2006.01 |
|
Download |
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Application note Firmware upload
Application note Upload firmware
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PDF
|
2006.02 |
|
Download |
| Application note Upload firmware |
PDF
|
2014.02 | ru | Download |
|
Application note Modbus commands OM 502DC
Aplikační list Modbus prikazy OM 502DC
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XLS
|
2015 |
|
Download |
| Application note MODBUS data protocol |
PDF
|
2020.01 | en | Download |
|
Application note Protocol MODBUS description
Application note Protocol MODBUS description
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PDF
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2006.01 |
|
Download |
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Application note protokol MODBUS popis
Application note protokol MODBUS popis
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PDF
|
2021.01 |
|
Download |
Certificates
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
Certificate EU_Declaration_OM502
Certifikát EU_Prohlaseni_OM502
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PDF
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2022 |
|
Download |
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Certificate Declaration_17050_OM502
Certifikát Prohlaseni_17050_OM502
|
PDF
|
2022 |
|
Download |
Firmware
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
| OM 502DC 78-500 |
HEX
|
2015 | xx | Download |
Software
| File name | File type | Version | Language | Download |
|---|---|---|---|---|
|
GSD OM-Profibus
GSD OM-Profibus
|
ZIP
|
2020 |
|
Download |
| GSDML OM-Profinet |
ZIP
|
2020.2.33 | xx | Download |
| GSDML OM-Profinet |
ZIP
|
2024.2.34 | xx | Download |
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Small compact transducer OM LINK USB with cable ensures safe and comfortable galvanically isolated connection between your computer and ORBIT MERRET instruments.