The Horner High Resolution Strain Gage Input Module allows bridged strain gages (load cells) to be directly connected to the PLC without external signal processing (transducers, transmitters, etc.). All analog and digital processing of the signal is performed on the module, and precision millivolt values are written to the Series 90-30 %AI input table with 16 bit resolution. The input range of this module is +/-20mV, +/-25mV, or +/- 30mV configurable through Logicmaster on a channel-by-channel basis. This provides a resolution of approximately 0.6uV, 0.8uV, or 0.9uV, respectively. Also, individual channels can be turned off, so that unused channels do not increase module response time. Another ability of this module is to monitor the load cell excitation voltage, and compensate for variations in this signal. Excitation voltage output is not supplied by the module. The HE693STG883 also features a setpoint for each channel, set with %AQ values and enunciated with %I inputs. Outputs (%Q) allow the ladder logic to trigger the module to perform a ZERO, TARE, or CLEAR function, critical for weighing applications.
Steady-State Power Consumption | ADC415: .4W /80 mA @ 5V 2.16W /90 mA @ 24V, ADC 420: .7W /140 mA at 5V 1.2W /50 mA @ 24V |
Surge Current at Power-Up | ADC415: 120mA @ 5V 150mA @ 24V, ADC420: 200mA @ 5V 100mA @ 24V |
Number of Channels | 4 |
Input Range | 4-20mA, +/-20mA |
I/O Required | 4 %AI, 4 %AQ, 16 %I |
A/D Type, Resolution | Integrating, 18 bits |
Useable Resolution | 13 bits plus sign |
Module Update Rate | 45 channels/S |
Input Impedance | 100 ohms |
Digital Filtering | 1-128 samples / update |
Analog Filtering | 1KHz, 3 pole Bessel |
Maximum Error | .05% full scale |
Input Impedance | 1 Megohm |
Channel to Channel (ADC410) | 1500VAC (RMS), +/- 2000VDC |
Common Mode Range (ADC410) | 1500VAC (RMS), +/- 2000VDC |
Channel to Channel (ADC405) | 500VAC (RMS), +/-700VDC |
Common Mode Range (ADC405) | 500VAC (RMS), +/-700VDC |
Common Mode Rejection | >100dB |
Relative Humidity | 5% to 95%, non-condensing |
Operating Temperature | The HE693THM409 allows thermocouple temperature sensors to be directly connected to the PLC without external signal processing (transducers, transmitters, etc.). All analog and digital processing of the thermocouple signal is performed on the module. These modules have a resolution of 0.5°C, and temperature values may be reported to the PLC %AI I/O table in 0.5°C or 0.5°F increments. 0 to 60°C (32 to 140°F) |
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