Auto Bypass Delay (P3.18.4, Id: 1817); Essential Services; Essential Services Enable (P3.18.5); Essential Services Digital Input Configuration: (P3.5.1.52, Id: 1827) - Siemens BT300 Operator's Manual

Essential Services

Siemens Industry, Inc.

Auto Bypass Delay (P3.18.4, ID: 1817)

This parameter defines the delay between an active fault and switching to the Bypass.
The message Going to Bypass mode displays on the keypad during the delay
time.
Range: 1.0 to 30.0s,
Default: 1.0s (as soon as possible)
If the Bypass Wizard was used to configure the Siemens BT300 Bypass and the
Essential Services feature was enabled, then all required settings will be automatically
programmed. The Bypass Wizard can be executed again to disable the Essential
Services feature, if desired.
The Essential Services feature allows full-power bypass mode control of the motor
during an emergency scenario. Activation of essential services overrides any other
selected operation. Essential Services ensures that the bypass contactor will not open
when a safety input or overload opens. Input line power goes directly to the motor.
● If using both the Interlock and Essential Services features, Essential Services waits
ten seconds for the interlock to confirm the safety condition, such as opening a
damper. After the ten-second delay, Essential Services controls the motor
regardless of the interlock safety condition status.
● Use extreme care when using the Essentials Services mode. All safety circuits are
deactivated (including motor overload and safety inputs).
Any time the Essential Services feature is enabled, the Remote Safety on the
Relay/Diagnostic board (pins 3 and 4) in the bypass enclosure must have a closed
contact or jumper permanently connected. It is recommended that all safety circuits be
connected to the I/O terminal strip on the drive controller board or on an I/O option
board terminal strip.

Essential Services Enable (P3.18.5)

This parameter defines whether or not the Essential Service functionality is activated.
0 = Disabled (Default)
1 = Enabled
Essential Services Digital Input Configuration:
(P3.5.1.52, ID: 1827)
This parameter lets you select a digital input terminal for the Essential services signal.
When this feature in enabled, DigIn SlotA.6 is used by default.
Example BT300 Drive Settings
If the Bypass Wizard was used to configure the Siemens BT300 Bypass and the
Essential Services feature was enabled, then all required settings are automatically
programmed. The Bypass Wizard can be executed again to enable the Essential
Services feature, if desired.
BT300 Bypass Operator's Manual
Application Features (Electronic Bypass Only)
Essential Services
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DPD01391
2016-08-05