| Model no | EM231 Dual weighing module 50Hz, 0.02% FS accuracy | |
| Article No | H7 231-2MH22-0XA0 | |
| Description | The 200 series weighing expansion module is used to detect weighing sensor signals with sensitivity of 1mV/V, 2mV/V, or 4mV/V, and can be connected to two signals | |
| Conventional | Dimensions WxHxD（mm） | 71.2×80×62 |
| Power dissipatio | 2W | |
| Available current（SM bus） | 50mA | |
| Available current（Sensor power 24V） | 120mA，max |
| Technical data | Supply voltage | 20.4-28.8VDC |
| Impulse current | 2A at 28.8VDC | |
| Insurance (non replaceable) | 1A, 60V slow fuse | |
| Isolation (on-site and logical) | isolate | |
| Isolation (on-site and 24V) | isolate |
| Sensor connection | Number of channels | 2 |
| Weight Value Data Format | word | |
| internal resolution | 65535（16bit） | |
| connect | Full bridge strain gauge using 4-wire or 6-wire technology | |
| Full scale error limit (temperature 20℃±10℃) | ≤0.02% | |
| Linear error | ≤0.01%FS | |
| Temperature coefficient of sensitivity | ≤±20ppm/Kv.E | |
| Zero temperature coefficient | ≤±0.1uV/K | |
| Temperature coefficient of sensitivity | 1mV/V；2mV/V；4mV/V | |
| Sampling frequency | 50Hz | |
| The limiting frequency of the low-pass filter | 0.05Hz、0.1Hz、0.2Hz、0.5Hz、1Hz、2Hz、5Hz、50Hz | |
| Average filter | 0~255 | |
| Distance to load cell | Maximum 500 meters | |
| Load cell power supply voltage | Typical DC 6V | |
| Load cell power supply current | Maximum 150mA | |
| Allowable resistance value of load cell (no explosion-proof interface) | ＞40Ω,＜4010Ω | |
| Allowable resistance value of load cell (with explosion-proof interface) | ＞87Ω,＜4010Ω | |
| Common-mode suppression | ＞120dB@120VAC | |
| Common-mode suppression CMRR@50/60Hz | Typical 80dB |
| Interference suppression | Noise suppression | 85dB@50Hz/60Hz |
| Insulation | 500V DC |
| LED diagnosis | 24V diagnosis | On: 24VDC power supply normal, Off: No 24VDC power supply |
| Cable break diagnosis | Flashing: sensor disconnected, off: no error |
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