Vicpas IND110, Техническое руководство

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IND110 Technical Manual
5-7
Setpoint Output Connections
The IND110 has two open collector transistor outputs. The LO output is turned ON
when the load cell signal is below the LO setpoint and OFF (open collector state) when
it is equal to or above the LO setpoint. The HI output operates in an identical manner
controlled by the HI setpoint.
Each transistor can sink 75 mA (drive a load rated at 75 mA or less). The load must
be connected to an ungrounded voltage of 24VDC or less. CAUTION: If the user’s DC
load supply is grounded, some form of isolation MUST be provided (Opto isolator or
equal). If this is not done, ground loops will result from grounds in other parts of the
circuitry and inaccurate 4/20 mA data or module destruction could result.
CAUTION! ADDED SAFETY INTERLOCKS, PROPER DISCONNECTS AND LINE FUSING BY
THE CUSTOMER ARE STILL REQUIRED AS THEY ARE IN ANY LOGIC CONTROL SYSTEM.
Figure 14