Interlock; Remote Bypass; Remote Bypass Enable (P3.18.6, Id: 1828) - Siemens BT300 Operator's Manual

Application Features (Electronic Bypass Only)

Interlock

Interlock

Remote Bypass

36
Siemens Industry, Inc.
If the Bypass Wizard was used to configure the Siemens BT300 Bypass and the
Interlock feature was enabled, then all required settings will be automatically
programmed. The Bypass Wizard can be executed again to enable the Interlock
feature, if desired.
The Interlock feature (also known as damper end switch logic ) enables the BT300
Drive outputs to inhibit motor start until a safety condition (proofing sequence) is
confirmed.
Any call to start the motor from the BT300 Drive or bypass does not directly start the
motor, but instead initiates the following interlock procedure:
● When in VFD or Bypass mode, any call to start the motor in VFD or bypass mode
energizes the BT300 Drive. Relay Output 1 closes and is used to supply power to
an external device such as a damper actuator.
● When control of the external device is satisfied, it must supply a contact closure to
digital input ## (Interlock Start 1). The motor then starts in the selected mode.
If the Bypass Wizard was used to configure the Siemens BT300 Bypass and the
Remote Bypass feature was enabled, then all required settings are automatically
programmed. The Bypass Wizard can be executed again to disable the Remote
Bypass feature, if desired.

Remote Bypass Enable (P3.18.6, ID: 1828)

This parameter defines if the Remote Bypass functionality is enabled.
● If Remote Bypass is enabled, the Bypass start command is given through digital
input or Fieldbus Control Word, when the drive is in Bypass mode. The Start
command source depends on the parameter P3.2.1 (Ctrl Place Auto).
● If Remote Bypass is disabled, the start command is given from keypad.
0 = Disabled
1 = Enabled
BT300 Bypass Operator's Manual DPD01391
2016-08-05