IO-4 Combination Analog Digital I/O Module – 10 Input/2 Output
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The IO-4 Analog Digital I/O module has 10 inputs and 2 outputs. |
Features:
The IO-4 combination analog/digital I/O module provides:
- 8 Digital inputs
- 2 Digital outputs (N.O Relay)
- 2 Analog inputs (optional one channel strain gauge)
Analog Inputs
This module provides two signal ranges, 0 to 20mA and 4 to 20mA. The default range is 4-20mA. A link on the rear of the module selects 4-20mA (link installed) or 0-20mA I/O for all channels.
Channel 1 can be optionally configured in the factory for a strain gauge input of range approximately 50mV. 5V excitation voltage is also supplied from this module. Calibration of the transducer can be performed using Toolbox software and the calibration constants are held in non-volatile memory.
Resolution of the converted signals is 12 bits binary (1 part in 4096).
All inputs share a single common and all outputs share a separate common at the zero volt rail.
Input protection for the module is sufficient to guarantee operation with reduced performance with up to 1500V common-mode. The module provides electrical isolation of externally generated noise between field wiring and the backplane through the use of optical isolation.
Digital I/O
Input characteristics are compatible with a wide range of user supplied input devices, such as push buttons, limit switches and electronic proximity switches, whilst outputs can control a wide range of user supplied load devices such as: motor starters, solenoids and indicators.
Power for the internal relay circuits is provided by the +12VDC bus on the backplane. The user must supply the AC or DC power to operate field devices. An internal fuse protects the relay contacts should ratings be exceeded.
Overview
- 8 Digital Inputs
- 2 Digital Outputs (N.O relay)
- 2 Analog Inputs
Order Information
- IO-4-1 (Multi I/O 2xAI + 8xDI + 2xDO)
Datasheets
Product specifications:
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Analog Input Section |
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Input Current Ranges
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4 to 20mA and 0 to 20mA |
| Input Voltage Ranges |
* 1 to 5V and 0 to 5V * |
| Calibration |
Factory calibrated to 5µA |
| Update Rate |
2 msec (all four channels) |
| Absolute Accuracy |
0.1% full scale + 0.1% reading |
Resolution |
12 bit (no sign bit) |
| Common Mode Voltage |
1500 Volts |
| Linearity |
<1 Least Significant Bit |
| Isolation |
1000 Volts RMS between field and logic |
Common Mode Rejection
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>70 dB at DC; >70 dB at 60 Hz |
| Cross-Channel Rejection |
>80 dB from DC to 1 kHz |
| Input Impedance |
250 ohms (100 ohms optional) |
| Input Filter Response |
325 Hz |
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| * Analog inputs can be modified from current inputs to voltage inputs by lifting one leg of the 250 ohm channel resistor. Each channel has its own resistor, so any combination of channels can be converted. |
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Strain Gauge - optional (requires factory modification) |
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| Input Range |
0-50mV (max) |
| Calibration |
Software by user and Toolbox |
| Excitation Supply |
+5V @ 4mA (max) |
| Update Rate |
250 msec Determined by I/O scan time and is application dependent |
| Resolution |
12 bit (no sign bit) |
| Absolute Accuracy (0 to 50 mA) |
0.1% full scale + 0.1% reading |
| Load Capacitance |
2nF |
| Load Inductance |
10mH |
| Isolation |
1000 Volts RMS between field and logic |
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Digital Input Section |
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| Rated Voltage |
24 Volts AC/DC |
| Input Voltage Range |
0 to +30 Volts AC/DC |
| Inputs per Module |
8 |
| Isolation |
1000 Volts RMS between field and logic |
| Input Current |
4mA (typical) at rated voltage |
| Input Characteristics: |
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| On-state Voltage |
11.5 to 30 Volts AC/DC |
| Off-state Voltage |
0 to +4 Volts AC/DC |
| On-state Current |
3.2mA minimum |
| Off-state Current |
1mA maximum |
| On response Time |
10ms typical |
| Off response Time |
17ms typical |
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Digital Output Section |
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| Rated Voltage |
24 Volts DC, 120/240 Volts AC |
| Operating Voltage |
5 to 30 Volts DC
5 to 250 Volts AC, 50/60 Hz |
| Outputs per Module |
2 |
| Isolation |
1000 Volts RMS between field and logic
500 Volts RMS between groups |
| Maximum Load |
2 amps pilot duty maximum per output
8 amps maximum per common |
| Minimum Load |
10mA |
| Maximum Inrush |
5 amps |
| On Response Time |
15 ms maximum |
| Off Response Time |
15 ms maximum |
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Environmental |
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| Operating Temperature |
-20°C to 70°C / -4°F to 158°F |
| Storage Temperature |
-40°C to 85°C / -40°F to 185°F |
| Operating Humidity |
5 to 95% RH non-condensing |
| Output Power |
24VDC @ 125mA (3W) Isolated |
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