Technical Specifications
Description
Value
Rated power supply voltage, V
12 - 24
The error of measuring DC voltage in the range of 0-10 V, min
1%
The error of measuring DC in the range of 0-20 mA, min
1%
Temperature measurement range (NTC 10 KB), °C
-25…+125
Temperature measurement error (NTC 10 KB) from -25 to +70 °C
±1
Temperature measurement error (NTC 10 KB) from +70 to +125 °C
±2
Temperature measurement range (PTC 1000), °C
-50…+120
Temperature measurement error (PTC 1000), °C
±1
Temperature measurement range (PT 1000), °C
-50…+250
Temperature measurement error (PT 1000), °C
±
1
Max. pulses frequency in “Pulse Counter/Logic Input” mode, Hz
200
Max. voltage given on an «IO1» input, V
12
Max. voltage given on an «IO2» input, V
5
Readiness time, max, s
0.4
Max. switched current with active load, A
8
Quantity and type of relay contact (switching contact)
1
Communication Interface
RS (
EIA
/TIA)
-485
ModBus data exchange protocol
RTU / ASCII
Rated operating condition
continuous
Climatic design version
NC
3.1
Protection rating of the device
IP
2
0
Permissible contamination level
II
Maximal power consumption, W, not more
1
Electric shock protection class
II
Wire cross-section for connection, mm²
0.5 - 1.0
Tightening torque of screws, N*m
0.4
Weight, max., kg
0.07
Overall dimensions, mm
90х
18x
64
The device meets the requirements of the following
:
EN 60947-1;
EN
60947-6-2;
EN 55011
;
IEC
61000-4-2
Installation is on standard 35 mm DIN-rail
Position in space - arbitrary
Housing material is self-extinguishing plastic
Harmful substances in amounts exceeding maximum permissible concentrations are not available
Table
2
–
Settings for OB-215
Description
Range
Factory
setting
Type
W/R
Ad
d
res
s
(DEC)
Digital signals measurement:
0 –
pulse counter;
1 –
logic input/pulse relay.
Analog signals measurement:
2 –
voltage measurement;
3 –
current measurement.
Temperature measurement:
4 – NTC (10KB)
sensor
;
5 – PTC1000
sensor
;
6 – PT 1000
sensor
.
Interface transformation mode:
7 – RS-485 – UART (TTL);
8 –
digital sensor
(1-Wire, I2C)*.
0…
8
1
UINT
W/R
100
Connected digital sensor
0 – DS18B20 (1-Wire);
1 – DHT11 (1-Wire);
2 – DHT21/AM2301 (1-Wire);
3 – DHT22 (1-Wire);
4 – BMP180 (I2C)
.
0…4
0
UINT
W/R
1
01
Temperature correction
-99…99
0
INT
W/R
102
Relay control:
0 – control is disabled;
1 – relay contacts are opened at a value above the upper
threshold, they are closed at a value below
the lower threshold;
2 – relay contacts are closed at a value above the upper
threshold, they are opened at a value below the lower
threshold.
0…2
0
UINT
W/R
103
Upper threshold
-50
0
...250
0
250
UINT
W/R
104
Lower threshold
-50
0
...250
0
0
0
UINT
W/R
105
Pulse counter mode:
0 – counter on the leading edge of the pulse;
1 – counter on the trailing edge of the pulse;
2 – counter on both edges of the pulse.
0…2
0
UINT
W/R
106
Switch debouncing delay
**
1…250
100
UINT
W/R
107
Number of pulses per counting unit
***
1…65534
8000
UINT
W/R
108
RS-485
:
0 – ModBus RTU;
1 – ModBus ASCII.
0…1
0
UINT
W/R
1
0
9
ModBus
UID
1…127
1
UINT
W/R
110
Rate of exchange
:
0 – 1200; 1 – 2400; 2 – 4800; 3 – 9600; 4 – 14400; 5 – 19200.
0…5
3
UINT
W/R
111
Parity check and stop bits:
0 –
no, 2 stop bits;
1 –
even, 1 stop bit;
2 –
odd, 1 stop bit.
0…2
0
UINT
W/R
112
Rate of exchange
UART(TTL)->RS-485:
0 – 1200; 1 – 2400; 2 – 4800; 3 – 9600; 4 – 14400; 5 – 19200.
0…5
3
UINT
W/R
113
Stop bits for
UART(TTL)->RS-485:
0 – 1
stop bit
; 1 – 1
.
5
stop bits
; 2 – 2
stop bits
.
0…2
0
UINT W/R
114
Parity check for
UART(TTL)->RS-485
:
0 –
None
; 1 –
Even
; 2 –
Odd
.
0…2
0
UINT
W/R
115
ModBus password protection
****
:
0 –
disabled
; 1 –
enabled
.
0…1
0
UINT
W/R
116
ModBus password value
A-Z,a-z,
0-9
admin
STRING W/R 1
17-124
Note:
*
The sensor to be connected is selected at address 101.
**
The delay used in switch debouncing in the Logic Input / Pulse Relay mode; the dimension is in millisecond.
***
Only used if the pulses counter is on. The column "Value" indicates the number of pulses at the input, after
registration of which, the counter is incremented by one. Recording to memory is performed with a periodicity of
1 minute.
***
*
If ModBus Password Protection is enabled (address 116, value "1"), then to access the recording functions,
you must write the correct password value to addresses 51-59.
Table 1 –
Basic Technical Specifications
Table
3
–
Output Contact Specifications
Operation
mode
Max. current at
U~250 V [A]
Max. switching power
at
U~250 V [VA]
Max. continuous permissible
AC / DC voltage
[V]
Max. current at
U
con
=
30 V DC [A]
cos
φ=1
8
2000
250/30
0.6
Digital I/O module OB-215 hereinafter referred to as the "device" can be used as
the following:
− remote DC voltage meter (0 – 10 V);
− remote DC meter (0 – 20 mA);
− remote temperature meter with the ability to connect sensors NTC (10 KB),
PTC 1000, PT 1000 or digital temperature sensor D18B20;
− temperature regulator for cooling and heating plants;
− pulse counter with saving the result in memory;
− pulse relay with switching current up to 8 A;
− interface converter for RS-485 – UART (TTL).
OB-215 provides:
− equipment control using relay output with switching capacity up to 1.84 kVA;
− tracking the state (closed/open) of the contact at the dry contact input.
RS-485 interface provides control of the connected devices and reading of the
sensors readings via the ModBus protocol.
Parameter setting is set by the user from the Control Panel using the ModBus
RTU/ASCII protocol or any other program that allows working with the ModBus RTU /
ASCII protocol.
The status of the relay output, the presence of the power supply and the data
exchange are displayed using indicators located on the front panel (Fig. 1, it. 1, 2, 3).
The overall dimensions and layout of the device are shown in Fig. 1.
Note:
Temperature sensors are included in the delivery scope as agreed upon.
1 –
indicator of data exchange via RS-485 interface (it is on when data is being
exchanged);
2 – indicator of the status of the relay output (it is on with closed relay contacts);
3 – indicator is on when there is supply voltage;
4 – terminals for connecting RS-485 communication;
5 – device power supply terminals;
6 – terminal for reloading (resetting) the device;
7 – terminals for connecting sensors;
8 – output terminals of relay contacts (8 A).
Figure
1
5
6
7
8
1
2
3
+
-
+A -B
NO
C NC
IO1
IO2
4
R
18
Operation Conditions
The device is intended for operation in the following conditions:
− Ambient temperature: from minus 35 to +45
°С
;
− Atmospheric pressure: from 84 to 106.7 kPa;
− Relative humidity (at temperature of +25
°С): 30 … 80
%.
The device
is not intended
for operation in the following conditions:
− Significant vibration and shocks;
− High humidity;
− Aggressive environment with content in the air of acids, alkalis, etc., as well as
severe contaminations (grease, oil, dust, etc.).
Quality Management System of the device designing and production complies with the requirements of
ISO 9001:2015, IDT
Dear Customer,
Novatek-Electro
Ltd. Company thanks you for purchasing our products.
You will be able to use properly the device after carefully studying the Operating Manual.
Keep the Operating Manual throughout the service life of the device.
Designation
Operating Manual
DIGITAL I/O MODULE
OB
-215
1
