17
O p e r a t i n g i n s t r u c t i o n s
Series-65H Hoist Pos 3
V115E_09.20
3.8 Safety Limit - for Ralay and PLC ver. 1
Possible reasons for the hoist reaching the
bottom safety limit:
• The hoist has been descended man
-
ually by releasing the brakes, for in-
stance during transportation.
• The hoist has been overloaded and
because of this the braking distance
became longer than normally and the
hoist reached the safety limit.
• The brakes of the lifting motors are not
correctly adjusted or for instance one
of the brakes does not work. That is why
the braking distance becomes longer
than normally and the hoist reaches
the safety limit.
• The cams of the bottom limit and the
safety limit at the lower end of the mast
are not correctly adjusted in relation
to each other. The distance between
these limits is shorter than the braking
distance with full load.
• Lower terminal limit switch is not work
-
ing and only the final limit switch stops
the downward movement.
3.8.1.1 Bottom Safety Limit Reset
Turn the bypass switch (S19) inside the cage
box to position ”II”.
When working with PLC controlled
hoist, turn additionally key switch (S20)
"Mode selection" on the cage con-
trol panel to position "0" Manual control.
Keep the bypass switch in position "II" and
simultaneously push the button (S2) “Up”.
The hoist starts to move upwards and is lift-
ed from the safety limit. Move the hoist on-
ly to its normal range of operation and stop
the hoist.
Return the key switch (S19) to its normal posi-
tion "0" and remove the key from the switch.
When working with PLC-controlled hoist,
return the key switch (S20) to position "1"
Automatic control.
When the hoist reaches the safety limit (S18), the control circuit is disconnected and it is
impossible to operate the hoist.
3.8.1 The Bottom Safety limit
-H4
-H3
-H2
-S3
-S2
I On
-Q2
O I
1 2 3
4 5 6
7 8 9
*
0 #
Off
I
-S15
-S16
-S20
EMERGENCY
STOP
Summary of Contents for 65H Series
Page 2: ...2 T a b l e o f C o n t e n t s Series 65H Hoist Pos 0 V115E_09 20...
Page 10: ...G e n e r a l i n f o r m a t i o n 2 V115E_09 20 Series 65H Hoist Pos 1...
Page 26: ...G e n e r a l i n f o r m a t i o n 18 V115E_09 20 Series 65H Hoist Pos 1 4450 L L1 L2 TWIN...
Page 34: ...G e n e r a l i n f o r m a t i o n 26 V115E_09 20 Series 65H Hoist Pos 1...
Page 36: ...S a f e t y i n s t r u c t i o n s 2 V115E_09 20 Series 65H Hoist Pos 2...
Page 46: ...S a f e t y i n s t r u c t i o n s 12 V115E_09 20 Series 65H Hoist Pos 2 MAX 1000 kg TH_10E...
Page 54: ...S a f e t y i n s t r u c t i o n s 20 V115E_09 20 Series 65H Hoist Pos 2 Tx527...
Page 55: ...21 S a f e t y i n s t r u c t i o n s V115E_09 20 Series 65H Hoist Pos 2...
Page 82: ...O p e r a t i n g i n s t r u c t i o n s 24 V115E_09 20 Series 65H Hoist Pos 3...
Page 84: ...2 V115E_09 20 T r o u b l e s h o o t i n g Series 65H Hoist Pos 4...
Page 124: ...10 V115E_09 20 Service and maintenance Series 65H Hoist Pos 5...
Page 144: ...30 V115E_09 20 Service and maintenance Series 65H Hoist Pos 5 Picture 3c Picture 3b...
Page 154: ...40 V115E_09 20 Service and maintenance Series 65H Hoist Pos 5...
Page 156: ...Inspection forms V115E_09 20 Series 65H Hoist Pos 8 SC HOIST INSPECTION FORMS...
Page 164: ...Inspection forms V115E_09 20 Series 65H Hoist Pos 8 SC HOIST INSPECTION FORMS...
