•
Auto bypass mode: When in drive mode, auto bypass is a timed interval that allows a fault condition in the drive
to activate running the motor in bypass without operator intervention.
Mode of Operation Select
•
Mode of operation is programmed through parameter group 31-** . See
.
Par. No.
Selection
Function
31-00
Bypass Mode
Selects source of motor power.
(0) Drive (drive mode) (1) Bypass (bypass
mode)
31-01
Bypass Start Time Delay
Sets a delay time for starting in bypass that
allows for external actions to take place prior
to line starting the motor.
0-60 sec. (default value is 5 sec.)
31-02
Bypass Trip Time Delay
Setting a value other than 0 sec. enables
auto bypass. Bypass trip delay sets the delay
time before switching to bypass mode when
the drive has a fault.
0-300 sec. (default is 0 sec. = OFF)
31-03
Test Mode Activation
Setting enabled puts bypass in test mode.
See the manual for warnings and cautions.
(0) disabled (default value) (1) enabled
31-10
Bypass Status Word
Read-only display, which shows the bypass
status in hex. See the next table for details.
0, 216-1 (default value is 0)
31-11
Bypass Running Hours
Read only display which shows bypass
running hours.
Table 6.4 Bypass Parameter Functions
Bit
Description
0
Test Mode The Test Mode bit will be true when the ECB is in Test Mode.
1
Drive Mode The Drive Mode bit will be true when the ECB is in Drive Mode.
2
Automatic Bypass Mode The Automatic Bypass Mode bit will be true when the ECB is in Automatic Bypass Mode.
3
Bypass Mode The Bypass Mode bit will be true when the ECB is in Bypass Mode.
4
Reserved This bit is reserved for future use.
5
Motor Running from Bypass/Drive The Motor Running from Bypass/Drive Bit will be true when the motor is running from
either the drive or the bypass.
6
Overload Trip The Overload Trip Bit will be true when the ECB detects an overload trip.
7
M2 Contactor Fault The Contactor Fault Bit will be true when an M2 Contactor Fault is detected.
8
M3 Contactor Fault The Contactor Fault Bit will be true when an M3 Contactor Fault is detected.
9
External Interlock The External Interlock Bit will be true when an External Interlock fault is detected.
10
Manual Bypass Override The Manual Bypass Override Bit will be true when the Manual Bypass Override input is true.
Table 6.5 Parameter 31-10
Bypass Status Word
Bit Definitions
Electronically Controlled B...
Vertical Bypass/Non Bypass Panel
MG.13.A1.22 - VLT
®
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