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MS 87/./. R 03/03
15
Definitions :
S-HI :
- Safety trip point.
- Its value is generally set at 110% of crane capacity.
- Adjustable to any point within the nominal capacity.
- Control the '
HI
'. Relay.
- Value in weigh unit.
- Takes account of the dynamic effect damper.
HIHI :
- Final safety trip.
- Its value is generally set at 130% of crane capacity.
- Control the '
HI
'. Relay.
- Value in weigh unit.
- Default value 30 % higher than
S-HI
.
- Does not take account of the dynamic effect damper.
S-LO :
- Intermediate trip point.
- Control the '
LO
'. Relay.
- Adjustable to any point within the nominal capacity but lower than S-HI.
- Could be configured ( Set-up n°1
REL
) to detect :
- Intermediate trip point
REL- HI
- Slack wire rope detection
REL-
LO
- Takes account of the dynamic effect damper.
Hysteresis S-LO :
Gap value between triggering and reset of the '
LO
' relay.
-
e.g.
S-LO
5000 Kg hysteresis
LO
500 Kg
REL=HI :
Triggering
LO
relay at 5000 Kg, reset at 4500 Kg.
REL=LO :
Triggering
LO
relay at 5000 Kg, reset at 5500 Kg.
Hysteresis S-H I :
Gap value between triggering and reset of the '
HI
' relay.
-
e.g.
S-HI
7000 Kg hysteresis
HI
1000 Kg
Triggering relay
HI
at 7000 Kg, reset at 6000 Kg.
REL :
- Configuration of the
LO
relay.
-
LO
: triggering while signal is decreasing.
-
HI
: triggering while signal is growing.
SPED :
- Configuration of the dynamic effect control.
-
Value
from
1
(fast)
to 40
(slow)
.
- Default value is 20
- Calculation of the real value of the load compared to its undulatory value
may be carried out from a greater or lesser figure. The greater the sampling the
more complex and precise the calculation. On the other hand the reaction of the
relays will be longer