Operating Instructions

Chapter 4 - Parameters and Menu Structure
Parameters (M3)
116 | 187
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Smart Infrastructure
2019-05-29
Table 73: Bypass Settings.
Structure
Parameter
Unit
Min
Max
Default
ID
Description
P3.18.1
Bypass Delay
s
1
30
1
1818
Defines the time from when bypass
is activated until the M1 (bypass)
contactor is pulled in and the motor
begins to spin.
P3.18.2
AutoBypass
Disabled
Enabled
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.
P3.18.3
AutoByp Faults
1812
Defines the authorized faults for the
Auto Bypass feature to activate.
P3.18.4
AutoBypass Delay
s
1
30
1
1817
Defines the delay time from when
the drive faults and the bypass is
enabled.
P3.18.5
EssentServEnable
Disabled
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.
P3.18.6
RemoteBypEnable
Disabled
Enabled
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)