LRV-1 lift control valve
1 General, product description
24/86
300-I-9010050-E-28/02.2012
1.7.5
Travel and switching diagram for short travel distances
The electronics of the LRV‐1 valve make it possible to control stops at
mezzanines and similar short travel distances with the same ride
comfort as in normal travel.
Note:
The maximum speed should be reduced to a value that, despite
the short travel distance, can actually be attained.
Short distance between floors with normal speed
(slow-speed travel distance too long)
Short distance between floors with reduced speed
(K6)
N
K
N
K
Z
X
Z
Y
ZY
XZ
Y
**
**
*
**
***
V
Motor run-on time of 0.5…1s
Drop-out delay of 0.5…1s, after drop out of K4
+ K6
K1 and K2 not until
Δ
connection
Adjust the speed to suit the circumstances (e.g.
50%)
X
Y
Z
Deceleration switch at normal speed
Deceleration switch at reduced speed
Soft-Stop is not separately adjustable
Legend
1
2
3
4
Motor contactor ON
Safety relay R2 closed
K2 + K6 are present
K1 is present
5
6
7
K3 is present
K4 + K6 are present
Safety relay R1 closed
N
Normal distance between floors
K
Short distance between floors
S
By using command signals K6, K7 or K8, various reductions in the
nominal speed can be achieved (e.g. for different floor spacings).
S
The speed reduction can be adjusted between 20
…
100% of
nominal speed