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POTENTIAL FOR EXPLOSION |
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oOnly use this equipment in non-hazardous locations or in locations that comply either with the Class I, Division 2, Groups A, B, C and D, or with the ATEX Group II, Zone 2 specifications for hazardous locations, depending on your local and/or national regulations. oDo not substitute components which would impair compliance to the hazardous location specifications of this equipment. oDo not connect or disconnect equipment unless power has been removed or the location is known to be non-hazardous. |
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Failure to follow these instructions will result in death or serious injury. |
NOTE: Additional equipment used in conjunction with the equipment described herein must also be suitable for the operating location.
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FIRE HAZARD |
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Use cable sizes that meet the I/O channel and power supply voltage and current ratings. |
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Failure to follow these instructions will result in death or serious injury. |
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UNINTENDED EQUIPMENT OPERATION |
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Do not exceed any of the rated values specified in the environmental and electrical characteristics tables. |
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Failure to follow these instructions can result in death, serious injury, or equipment damage. |
The table below provides the general characteristics of the TM7BAI4VLA block:
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General characteristics |
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Rated power supply voltage |
24 Vdc |
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Power supply range |
18...30 Vdc |
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24 Vdc I/O power segment current draw |
125 mA |
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TM7 power bus current draw |
38 mA |
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Protection |
Against reverse polarity |
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Power dissipation |
3.8 W max. |
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Weight |
200 g (7.05 oz.) |
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ID code |
5873 dec |
See also Environmental Characteristics.
The table below provides the input characteristics of the TM7BAI4VLA block:
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Input characteristics |
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Number of input channels |
4 |
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Wiring type |
2 wires |
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Input range |
-10...+10 Vdc |
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Input type |
Differential |
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Input impedance |
20 MΩ min. |
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Sample duration time |
400 µs for all inputs |
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Conversion mode |
Successive Approximative Register |
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Cut-off frequency |
1 kHz |
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Attenuation |
40 dB |
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Common mode rejection |
DC |
50 dB min. |
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50 Hz |
50 dB min. |
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Input tolerance - maximum deviation at ambient 25° C (77°F) |
< 0.1% of the measurement |
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Input tolerance - temperature drift |
0.011% / °C (0.006% / °F) of the measurement |
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Input tolerance - non linearity |
< 0.1% of the full scale (20 Vdc) |
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Digital resolution |
11 bits + sign |
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Resolution value |
4.882 mV |
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Crosstalk rejection between channels |
70 dB min. |
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Isolation between channels |
Not isolated |
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Isolation between channels and bus |
See note 1 |
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Permitted input signal |
±30 Vdc max. |
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Input protection |
Protection against wiring with 24 Vdc supply voltage |
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1 The isolation of the block is 500 Vac RMS between the electronics powered by the TM7 power bus and those powered by the 24 Vdc I/O power segment connected to the block. In practice, there is a bridge between the TM7 power bus and the 24 Vdc I/O power segment. The two power circuits reference the same functional ground (FE) through specific components designed to reduce effects of electromagnetic interference. These components are rated at 30 Vdc or 60 Vdc. This effectively reduces isolation of the entire system from the 500 Vac RMS.
The table below provides the power supply for the sensors of the TM7BAI4VLA block:
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Supply |
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Voltage |
24 Vdc I/O power segment supply less voltage drop for internal protection |
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Voltage drop for internal protection at 500 mA |
2 Vdc max. |
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Supply current (for all powered connected sensors) |
500 mA max. |
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Internal protection |
Overcurrent and short circuit |
