6 DCP Interface
46 YASKAWA TOEPC710616134G AC Drive L1000A Technical Manual Addendum
Note:
If the remaining distance at the start of travel is less than 20 cm, the drive controller automatically limits the maximum speed to crawl
speed (V0).
Exchange of Parameters between Lift Controller and Drive Controller before the Travel
To enable the lift controller to track the floor level correctly and to know which calls it can still accept during a
travel, additional information from the drive controller is required. Before starting, the drive controller receives
information via communication channel on how far the lift has to travel. It responds by transferring the minimum
distance the lift has to travel at the calculated speed and how long the remaining distance has to be to allow an
extension.
Lift Controller :
STX 1C 'I' '7' V
max
Ss1 Ss2 Ss3 Ss4 Ss5 ETX
V
max
:
'1' > max. speed is V3
'2' > max. speed is V4
Ss1 ... Ss5 :
Desired distance in cm (ASCII coded in BCD format)
Drive Controller :
STX 1C 'I' '7' V
max
Sg1 Sg2 Sg3 Sg4 Sg5 Sv1 Sv2 Sv3 Sv4 Sv5 ETX
f
typ
:
's' ' short travel
'l' ' long travel
Sg1 ... Sg5 :
Minimum travel distance in cm (ASCII coded in BCD format)
Sv1 ... Sv5 :
Deceleration distance in cm (ASCII coded in BCD format)
A travel can be extended if actual remaining distance > Sverz (deceleration distance)
V3' Travel :
Same procedure as described above. Difference: The speed mode "Intermediate 1 [bit G6]" (V3) is transmitted.
This limits the speed to V3.
Application: For short travels also, the lift can be operated with preselected speed V4 as described before. In cases
in which it is desirable to limit the speed, V3 can be used.
VN' Re-leveling Travel Depending on Remaining Distance :
The usual method of re-leveling is often just a compromise. With DCP4, however, commanding the remaining
distance makes re-leveling accurate to the millimeter.
1. Before the travel starts, the speed mode "Releveling [bit G1]" (VN) is transmitted.
2. The travel starts with activation of stop switch bit B2. From the start of the travel, the absolute remaining
distance is read via DCP.
3. The drive decelerates dependent on the remaining distance until the lift car reaches the exact floor position.
4. The lift controller does not withdraw the stop switch bit B2 until the mechanical brake bit S6 is switched off.
5. The lift controller must not switch off the drive controller enable bit B0 until the end of the travel S1=0.
To Next Page
Loading...
Need help?
General
