Technical data
Analog inputs | EJ3318 |
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Number of inputs | 8 x TC |
Temperature measurement (thermocouple) | Type B, C, E, J, K, L, N, R, S, T, U (pre-set type K), mV measurement |
Connection technology | 2-wire |
Maximum cable length to the sensor | 30 m (see note) |
Temperature range | Defined in the range for each sensor (Pre-set: type K; -200 ... +1370°C); voltage measurement ±30 mV ... ±75 mV Lower limit of -454°F (-270°C) for type K, T thermocouples |
Resolution | 0.01°C/ digit (selectable, default: 0.1°C) |
Input filter limit frequency | Typ. 1 kHz; depending on sensor length, conversion time, sensor type |
Conversion time | approx. 5 s up to 40 ms, depending on configuration and filter setting, pre-set approx. 500 ms |
Wire break detection | yes |
Special features | Idle detection, error detection of external cold junction compensation (CJC) |
Voltage measurement | EJ3318 |
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Measuring range, technically available | approx. ±78 mV |
Measuring ranges (nominal) and resolution | ±30 mV (1 µV per digit, thus max. 32.768 mV can be displayed) ±60 mV (2 µV per digit, thus max. 65.536 mV can be displayed) ±75 mV (4 µV per digit, thus max. 131 mV can be displayed, note technically available measuring range) The measuring ranges 30 and 60 mV are executed in software to increase the resolution and always use the same electrical measuring range of ±75 mV. |
Measurement uncertainty | at ±75 mV, 23°C ambient temperature: < ±0.096% (relative to the full scale value): |
Temperature measurement | EJ3318 |
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Electrical measuring range used | ±75 mV |
Measuring ranges | Type B: +200...+1820°C |
Resolution | Temperature display 0.1/0.01°C per digit, pre-set 0.1°C |
Measurement uncertainty | at 23°C ambient temperature, with reference configuration, according to type: |
Supply and potentials | EJ3318 |
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Current consumption load voltage (Up contacts) | - |
Power supply | via the E-bus |
Current consumption via E-bus | 190 mA |
Electrical isolation | 500 V (E-bus/signal voltage) |
Communication | EJ3318 |
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Distributed clocks | - |
Environmental conditions | EJ3318 |
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Permissible ambient temperature range during operation | -25°C … +60°C (extended temperature range) |
Permissible ambient temperature range during storage | -40°C ... +85°C |
Permissible relative air humidity | 95%, no condensation |
Operating altitude | max. 2,000 m |
General data | EJ3318 |
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Dimensions (W x H x D) | approx. 12 mm x 66 mm x 55 mm |
Weight | approx. 30 g |
Installation | on signal distribution board |
Pollution degree | 2 |
Installation position | |
2 and 7 | |
Color coding | green |
Standards and approvals | EJ3318 |
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Vibration/shock resistance | conforms to EN 60068-2-6 /EN 60068-2-27 (with corresponding signal distribution board) |
EMC immunity/emission | conforms to EN 61000-6-2 /EN 61000-6-4 (with corresponding signal distribution board) |
Protection rating | EJ module: IP20 |
Approvals/markings* | CE, EAC, UKCA, |
*) Real applicable approvals/markings see type plate on the side (product marking).
![]() | CE approval The CE Marking refers to the EtherCAT plug‑in module mentioned above. |
![]() | Maximum cable length to the sensor Without additional protective measures, the maximum cable length from the EtherCAT Module to the sensor is 30 m. For longer cable lengths, suitable surge protection should be provided. |