Rockwell-automation T3468A ICS Regent DC Guarded Digital Output Module Manuel d'utilisateur télécharger pdf (Page 10)

DC Guarded Digital Output Modules (T3461A, 62A, 68A)

Industrial Control Services

module. In this way, the two FETs of each output circuit are

connected in series with the load: one on the positive side and

one on the negative side of the load.

The output loads must not connect to the field power supply

return out in the field. Such connection will bypass the

negative

side FET in the Guarded output and defeat the

purpose of the two series FETs for fail

safe or fault tolerant

control.

Output circuit testing requires the presence of field power on

terminals A/B and C/D. If output power is d

isconnected,

output testing fails and a module fault is indicated.

Important!

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Rockwell-automation T3468A ICS Regent DC Guarded Digital Output Module Manuel d'utilisateur Page 10