Tractel dynasafe Mecha 3.2, Installation, Operating And Maintenance Manual

10

GB

ACTIONS

REMARKS

1

Lift the two loads 

(100% + 10% WLL) 

by about 10 cm.

The additional 10% represents 

the overshoot value authorized 

in accordance with the European 

directives.

2

Adjust the safety 

threshold S1.

Gradually screw in the threshold 

adjustment screws (rep 3) until 

the NC contact opens (§4.4). 

Use a multimeter, for example, to 

check the state of the contact.

3

Check correct 

operation.

It must be possible to lift the 

“WLL” load.

It must not be possible to lift the 

“WLL” load + 10%.

Depending on the lifting speed, 

the dynamic effect may produce 

an unintentional overload. In this 

case, consult with a technician 

capable of integrating a signal 

filtering device (example: time-

out, etc.).

5.3. 

Adjustment of a safety threshold and 

an intermediate threshold

This  configuration  satisfies  a  number  of  applications 

such as, for example, fast lifting speed conditioned to 

load lifted. Audible or visual signal triggered at 90% of 

the WLL. etc.

Preliminary conditions:

–

Load limiter correctly mounted and wired.

–

Adjustment screws unscrewed to the maximum.

–

Hook free of any load.

Equipment required:

–

A  load  (called  «WLL»)  equivalent  to  100%  of  the 

nominal capacity authorized for the lifting machine.

–

An additional load equivalent to 10% of the «WLL».

–

A load «X» equivalent to the value of the intermediate 

threshold.

ACTIONS

REMARKS

1

 Lift the two loads 

(100% + 10% WLL) 

by about 10 cm.

The additional 10% represents 

the overshoot value authorized 

in accordance with the European 

directives.

2

Adjust the safety 

threshold S1.

Gradually screw in the threshold 

adjustment screws (rep 3) until 

the NC contact opens (§4.4). 

Use a multimeter, for example, to 

check the state of the contact.

3

Check correct 

operation.

It must be possible to lift the 

«WLL» load.

It must not be possible to lift the 

«WLL» load + 10%.

Depending on the lifting speed, 

the dynamic effect may produce 

an unintentional overload. In this 

case, consult with a technician 

capable of integrating a signal 

filtering device (example: time-

out, etc.).

4

Lift the intermediate 

load “X”.

Wait for the load to stabilize 

before adjusting the threshold.

5

Adjust the 

intermediate 

threshold S2.

Gradually screw in the threshold 

adjustment screws (rep 3) until 

the NC contact opens (§4.4). 

Use an ohmmeter, for example, 

to check the state of the contact.

6

Check correct 

operation.

Check that micro switch S2 

opens when the load “X” is lifted.

5.4. 

Adjustment of a safety threshold and 

a “Wire rope slack” threshold

This  configuration  is  particularly  designed  to  detect  a 

“Wire rope slack” situation or “presence of a minimum 

load”  below  which  the  signal  generated  by  the  micro 

switch will be processed, for example, to stop the down 

movement of the lifting hook.

Preliminary conditions:

–

Load limiter correctly mounted and wired.

–

Adjustment screws unscrewed to the maximum.

–

Hook free of any load.

Equipment required:

–

A  load  (called  “WLL”)  equivalent  to  100%  of  the 

nominal capacity authorized for the lifting machine.

–

An additional load equivalent to 10% of the “WLL”.

–

A load “X” equivalent to the value of the “Wire rope 

slack” threshold.

ACTIONS

REMARKS

1

Lift the two loads 

(100% + 10% WLL)

by about 10 cm.

The additional 10% represents 

the overshoot value authorized 

in accordance with the European 

directives.

2

Adjust the safety 

threshold S1.

Gradually screw in the threshold 

adjustment screws (rep 3) until 

the NC contact opens (§4.4). 

Use a multimeter, for example, to 

check the state of the contact.

3

Check correct 

operation.

It must be possible to lift the 

“WLL” load.

It must be possible to lift the 

“WLL” load + 10%.

Depending on the lifting speed, 

the dynamic effect may produce 

an unintentional overload. In this 

case, consult with a technician 

capable of integrating a signal 

filtering device (example: time-

out, etc.).

4

Lift the intermediate 

load “X”

Wait for the load to stabilize 

before adjusting the threshold.

5

Adjust the safety 

threshold S2.

Gradually screw in the threshold 

adjustment screws (rep 3) until 

the NO contact opens (§4.4).

For more accuracy, take into 

account the hysteresis in the 

setting.

Use a multimeter, for example, to 

check the state of the contact.