SPDSM04 Pulse Input Module HR Series Harmony Rack I / O 8 Channel 0-50 KHZ

PRODUCT DETAILS 

The technical specifications of the inputs are the same with the other

digital inputs, but with the following exception:

1. Caused by the direct electrical connection with the output, the varistor

for demagnetization of inductive loads (see figure above) is also in effect

at the input.

2. Therefore, the voltage difference between UP5 and the input signal

must not be greater than the limit voltage of the varistor.

3. The limit voltage of the varistor is ca. 36 V. This means,that if UP5 = 24V,

the input signal voltage must be between -12 V and +30 V. If UP5 = 30 V,

the input voltage has to be within -6 V and +30 V.

If all of the 8 channels of the group are used as inputs, and if in addition the

UP5 terminal is left unconnected, no restrictions exist for the inputs. The

input signal voltages then may be within -30 V and +30 V. There is no

restriction for the input/output group concerning its safety against reversed

polarity.

  
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