Operating Instructions

Start-up Procedures
Communications Configuration
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Siemens Industry, Inc. BT300 Bypass Operator's Manual DPD01391
Building Technologies 2017-09-28
If Enabled is selected for Remote Bypass, Step 6 displays. Otherwise, the wizard
jumps directly to Step 7.
Step Parameter/Question Settings
6 Command Source (P3.5.1.1) Fieldbus CTRL
I/O Control
7 Interlock* (P3.2.11) Enabled
Disabled
If Enabled is selected for Interlock, Step 8 displays. Otherwise, the wizard jumps
directly to Step 9.
Step Parameter/Question Settings
8 Interlock Delay (P3.2.12) Range: 0 to 120 s
9 Auto Bypass* (P3.18.2) Enabled
Disabled
If Enabled is selected for Auto Bypass, Step 10 displays. Otherwise, the wizard jumps
directly to Step 11.
Step Parameter/Question Settings
10 Auto Bypass Delay (P3.18.4) Range: 0 to 30 s
11 Fault Selection (P3.18.3) Select faults to enable Auto Bypass:
Any Fault
Undervoltage
Overvoltage
Overcurrent
AI Low
Unit Temperature
Motor Overtemp
External Fault
Underload Fault
* Feature of the Electronic Bypass Option. For more details, see the Applications
Features (Electronic Bypass Only) section of this document.
The following message displays: Bypass Wizards is now complete. Press
OK to continue. The Bypass Wizard is now complete. Any site specific application
programming should now be completed.
Communications Configuration
The communications configuration is documented in the Siemens BT300 HVAC Drive
Operator’s Manual (DPD01809).
Additional Configuration
Depending upon the site and the sequence of operation desired, such as auto reset,
flying start, skip frequencies, and switching frequency, additional configuration may be
required. See the Siemens BT300 HVAC Drive Operator’s Manual (DPD01809) for
further configuration information.