Universal Remote I/O Modules For PLCs – Optical Isolation

Remote I/O, or distributed I/O, offers several advantages over the traditional local I/O found on a Programmable Logic Controller (PLC). First, it allows you to locate the I/O modules close to the process that is being monitored or controlled. This greatly improves noise immunity, as the weak sensor signals are converted to digital signals before being transmitted long distances through a noisy plant environment. OMEGA universal remote I/O modules use a simple 2-wire RS485 link using MODBUS RTU/ASCII protocol, which is supported by most programmable logic controllers. A second advantage is that remote I/O greatly reduces the wiring at the main control panel, saving time and money when repairs and upgrades are necessary. Adding additional sensors and control signals is as easy as connecting to the already installed RS485 link and modifying the PLC program to utilize the new I/O. In addition, remote I/O allows you to expand your process control system beyond the local I/O capabilities of your PLC. You can add thermocouple, RTD, pressure, and flow sensors to a PLC that doesn’t support these types of inputs. With remote I/O, your process application is no longer dependent on your controller choice.

SPECIFICATIONS
Number of Channels:
    4: HE359ADC107, HE359ADC120, HE359DAC007, HE359RTD100, HE359THM100, HE359DIQ512
    8: HE359ADC207, HE359ADV220, HE359DAC107, HE359DAC201, HE359THM200
    12: HE359DIM610
Input Ranges:
    ±10V: HE359ADC107, HE359ADC207
    ±20 mA: HE359ADC120, HE359ADV220
    12/24 Vdc: HE359DIM610, HE359DIQ512 RTD Pt-100, Ni-100, Pt-1000, Ni-1000; 0 to 2000 Ω,
    0 to 500 Ω: HE359RTD100 J, K, R, S, B, E, T, N; ±50 mV, ±100 mV, ±500 mV,
    ±1V: HE359THM100, HE359THM200
Output Ranges:
    0 to 20 mA or 0 to 10V: HE359DAC007, HE359DAC107
    0 to 10V: HE359DAC201
OFF Voltage Level: 0 to 3 Vdc (HE359DIM610, HE359DIQ512)
ON Voltage Level: 10 to 30 Vdc (HE359DIM610, HE359DIQ512)
Resolution:
    16-bit: HE359ADC107, HE359ADC207, HE359ADC120, HE359ADC220
    1 µA or 1 mV: HE359DAC007, HE359DAC107
    1 mV: HE359DAC201
    0.1°C or 0.1 Ω: HE359RTD100
    0.1°C or 0.001 mV: HE359THM100, HE359THM200 RTD Excitation Current (HE359RTD100): 350 µA, typical
Accuracy:
±0.1% FS: HE359RTD100, HE359THM100, HE359THM200
Load Resistance:
    Voltage: >5 kΩ (HE359DAC007, HE359DAC107, HE359DAC201)
    Current: <500 Ω (HE359DAC007, HE359DAC107)
Output Calibration:
    Voltage: ±10 mV (HE359DAC007, HE359DAC107, HE359DAC201)
    Current: ±20 µA (HE359DAC007, HE359DAC107)
Input Impedance:
    1 MΩ: HE359ADC107, HE359ADC207
    <50 Ω: HE359ADC120, HE359ADC220
    4.7 kΩ: HE359DIM610, HE359DIQ512
    >10 MΩ: HE359THM100, HE359THM200 Relay Outputs Per Module (HE359DIQ512): 4 (2 SPDT, 2 SPST) Max Switching Power (HE359DIQ512): 2A @ 250 Vac, 2A @ 30 Vdc
Min Load (HE359DIQ512): 5 Vdc, 10 mA
Max Voltage (HE359DIQ512): 250 Vac, 110 Vdc
Linearity: ±0.1%
External Power Supply Voltage:
    10 to 30 Vdc: HE359ADC107, HE359ADC207, HE359ADC120, HE359ADC220, HE359DIM610, HE359RTD100, HE359THM100, HE359THM200
    18 to 30 Vdc: HE359DAC007, HE359DAC107, HE359DAC201
Required Power (Steady State):
    30 mA @ 24 Vdc, Typical: HE359ADC107, HE359ADC207, HE359ADC120, HE359ADC220, HE359DAC201, HE359RTD100, HE359THM100, HE359THM200
    30 mA @ 24 Vdc, Typical (100 mA max): HE359DAC007, HE359DAC107
    35 mA @ 24 Vdc,Typical: HE359DIM610
    45 mA @ 24 Vdc, Typical: HE359DIQ512
Required Power (Inrush): Negligible
Isolation: 2000 Vac for 60 seconds (input/power and input/comms)
PLC Update Rate: Determined by Communications with OCS: HE359DIM610, HE359RTD100, HE359THM100, HE359HTM200
20 mS min: HE359DIQ512
Thermal Drift (HE359DAC201): 100 ppm max
Terminal Type: Screw type, removable
Storage Temperature: -40 to 85°C (-40 to 185°F)
Operating Temperature: -10 to 60°C (14 to 140°F)
Relative Humidity (Non-Condensing):
    5 to 95%: HE359ADC107, HE359ADC207, HE359DAC007, HE359DAC107, HE359DAC201, HE359DIM610, HE359DIQ512, HE359RTD100, HE359THM100, HE359THM20
    5 to 90%: HE359ADC120, HE359ADC220
Dimensions: 17.5 W x 100 H x 120 mm D (0.69 x 3.94 x 4.72′)
Weight: 150 g (6 oz); 210 g (8.4 oz) HE359DIQ512 only
Communications: MODBUS®/RTU (binary) RS485 half duplex
Default Communications Parameters: 38400 baud, N, 8, 1, no h/s default modbus ID 1
Supported MODBUS Commands: 1, 2, 3, 4, 5, 6, 8, 15, 16