Siemens bt300 Operator's Manual page 109

Structure Parameter
P3.18.1 Bypass Delay
P3.18.2 AutoBypass
P3.18.3 AutoByp Faults
P3.18.4 AutoBypass Delay
P3.18.5 EssentServEnable
P3.18.6 RemoteBypEnable
Siemens Industry, Inc.
Building Technologies
Table 73: Bypass Settings.
Unit Min Max
s 1 30
Disabled Enabled
s 1 30
Disabled Enabled
Disabled Enabled
Siemens BT300 HVAC Drive
Chapter 4 - Parameters and Menu Structure
Default ID
1 1818 Defines the time from when bypass is
activated until the M1 (bypass)
contactor is pulled in and the motor
begins to spin.
Disabled 1813 Enables parameter to the Auto Bypass
feature. If enabled, when a selected
fault (as defined by AutoByp Faults
[P3.18.3]) occurs and the amount of
time defined in AutoBypass Delay
(P3.18.4) has passed, the unit
automatically switches to bypass
mode of operation. The M2 (Output)
contactor will be opened, the M1
(Bypass) contactor will be closed, and
line voltage will be connected directly
to the motor. Motor will spin at full
speed.
1812 Defines the authorized faults for the
Auto Bypass feature to activate.
1 1817 Defines the delay time from when the
drive faults and the bypass is enabled.
Disabled 1826 Enables parameter to the Essential
Services feature. If enabled, when
activated by Essential Services
(P3.5.1.52), an Essential Services
fault (83) displays. This is a version of
Fire Mode that uses bypass instead of
the drive for controlling the motor. The
unit automatically switches to bypass
mode of operation. The M2 (Output)
contactor will be opened, the M1
(Bypass) contactor will be closed, and
line voltage will be connected directly
to the motor. Motor will spin at full
speed.
Disabled 1828 Enables parameter to the Remote
Bypass feature. If enabled, when unit
is placed in bypass mode, the M1
(Bypass) contactor opens/closes in
accordance with Rem. Ctrl. Place
(P3.2.1)
Parameters (M3)
Description
109 | 180
DPD01809
2016-06-07