Diagnostics Optimization CT MODBUS RTU Technical Data
320
E300 Design Guide
Issue Number: 1
Energy Meter: MW h
(
J84
) and
Energy Meter: kW h
(
J85
) accumulate the energy transferred through the drive. If
Reset Energy Meter
(
H37
) = 1 then
Energy Meter: MW h
(
J84
) and
Energy Meter: kW h
(J85) are held at zero. If
Reset Energy Meter
(
H37
) = 0 then the energy meter is enabled and will
accumulate the energy flow. If the maximum or minimum of
Energy Meter: MW h
(
J84
) is reached the parameter does not rollover and is instead
clamped at the maximum or minimum value. For Open-loop, RFC-A and RFC-S modes a positive energy flow indicates that power is flowing out of
the a.c. motor terminals. For Regen mode a positive energy flow indicates that power is flowing from the supply to the AC drive terminals.
When set to On (1) the blocked elevator release function is enabled.
The mechanical lock on an elevator car will operate independent of the drive during an over speed condition so the elevator car is safely stopped in a
locked position. This elevator releasing feature will attempt to release the blocked elevator. The blocked elevator releasing function is enabled using
a digital input to the drive routed to
Blocked Elevator Release Enable Input
(
H38
).
Once enabled the elevator car locked condition is identified by
using
Current Limit Reached
(
L15
) and
At Zero Speed
(
L08
) where if both = On (1) the elevator car is blocked, and if either = Off (0) the elevator car
is released.
The blocked elevator releasing function can be used to release the elevator car when trapped after the elevator car mechanical brakes have been
used.
If the elevator car is not released immediately (within 150 ms) the drive will move the elevator car up and down by short distances (switch direction
commands repeatedly) as long as a speed is selected (as part of the elevator controller inspection mode). A 150 ms commanded direction to 50 ms
opposite direction ratio is applied to release the elevator car. When the elevator car is released it will travel at the creep speed defined by Creep
Speed Select (
G52
). During elevator car release the drive will run the motor with regardless of the selected speed.
When the speed and direction signals have been removed, ending the elevator car release,
Blocked Elevator Release Enable Input
(
H38
)
must be
set to Off (0). If the blocked elevator releasing function is to be implemented again
Blocked Elevator Release Enable Input
(
H38
) must be set to On (1)
again.
To allow maximum torque to be generated, and provide the best performance for the blocked elevator releasing, the following parameter settings are
used:
H37
Reset Energy Meter
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
1
Default
0
Units
Type
1 Bit Volatile
Update Rate
Background read
Display Format
Standard
Decimal Places
0
Coding
RW
H38
Blocked Elevator Release Enable Input
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
1
Default
0
Units
Type
1 Bit User Save
Update Rate
Background
Display Format
Standard
Decimal Places
0
Coding
RW
Parameter
Description
At Zero Speed
(L08)
Used to detect if the elevator car has been released
Current Limit Reached
(L15)
Used to detect if the elevator car has been released
V1 Creep Speed Reference
(G01)
Used to set the maximum speed
Maximum Speed Error Threshold
(H15)
Set to 0 internally during blocked elevator release preventing a trip.
Maximum Distance Error Threshold
(H16)
Set to 0 internally during blocked elevator release preventing a trip.
Содержание 03200106
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