Optional Functions
Safe Shutdown Function
The following may let the remote control transmitter system be shut down in some specific emergency cases so as to avoid any possible maloperation.
1. Impacting shutdown function
After a transmitter system is impacted externally (for example, it is knocked by a heavy thing), the transmitter system may be automation shut down.
2. Rolling shutdown function
While rolling of a transmitter system is automatically detected, the transmitter system may be automatically shut down at once to prevent any possible maloperation due to rolling.
3. Dropping shutdown function
While it is automatically detected that a transmitter system Is under the dropping situation, the transmitter system is automatically shut down at once; for example, while a transmitter system is falling accidentally or all operator throws a transmitter system to another operator, maloperation may possibly occur due to falling of the transmitter system.
The above safety features act as optional functions, which are only applicable to transmitter systems.
Takeover-Release Function
The "takeover-release” functions allows 2 or more crane operators having their own transmitters, they may independently operate a crane. Each crane being equipped with a receiver may receive and monitor all emission frequencies. After a receiving system is active, all transmitter systems have the same operation authorization.
Obtaining the operation authorization
1. Start the transmitter system 1;
2. Press the "Takeover"' button in the transmitter system 1;
3. After closing the transmitter system 1, restart it;
4.Tte transmitter 1 has the operation authorization for the crane.
Release operation authorization
1. Press 1he "release” button in the transmitter 1;
2. The transmitter 1 may be ready for operation (standby) or shut down;
3. The operation authorization of the transmitter 1 is called off based on the above procedures.
Takeover operation authorization
1. Press the "'Takeover” button of the transmitter 2, the operation authorization from the transmitter 1 is taken over.
2. The transmitter 2 has the operation authorization till it sends a “release” order.
Notes:
1. A receiver being under the takeover status may be displayed through indicator light of a crane or machine;
2. The receiver Is under weightlessness and restarted while it is taken over by any transmitter system; and the original takeover function is recovered. The takeover process must be carried out again;
3. If a transmitter is shut down or even lost while its "release" button is not pressed, the receiver may not be taken over by any other transmitter. The conditions for the receiver being normally taken over by any other transmitter are as follows: the transmitter with operation authorization may be started again, and the "release” button is pressed; or the receiver is restarted after its being power off.
Tandem Function
A transmitter with tandem function may control 2 cranes (receivers) through an emission frequency point at the same time; and control of each crane may be selected through the rotary switch in the transmitter.
The positions of this selection switch are defined as:
A A+B B
Control crane A
Tandem mode of 2 cranes
Control crane B
Takeover-Release and Tandem Function
2 or more operators may interactively use a few cranes under the this mode. Each crane equipped with a receiver may receive and monitor all emission frequencies. After the receiving system has been active, all transmitter have the same operation authorization.
Release operation authorization
1.The "release" button in the transmitter 1 or transmitter system 2 is pressed, and other transmitter systems may possibly have the operation authorization of cranes;
2. For prevention of any wrong operation, the transmitter system 1 or transmitter system 2 is shut down; thus, the transmitter system 1 or transmitter system 2 releases operation authorization of cranes.
Takeover operation authorization
1. The rotary switch in the transmitter system 1 or transmitter system 2 is switched to the corresponding position ( “A’”, "A+B" or 'B");
2. The "takeover" button in the transmitter system is pressed to obtain the operation authorization of the crane. The operation authorization of the transmitter system 1 or transmitter system 2 may be obtained till it sends the "release" order.
Case
The transmitter system 2 has the operation authorization of cranes: and the transmitter system 1 is required to take over 1 crane or all cranes.
The operator must complete the following procedures:
1. Press the “release” button in the transmitter system 2;
2. For prevention of any operator’s error, the transmitter system 2 is shut down;
3. Start the transmitter system 1;
4. The rotary switch in the transmitter system 1 is switched to "A", “A+B" or “B" (according to receive the operation authorization for some certain crane);
5 Press the 'takeover" button in the transmitter system 1.
Thus, the transmitter system 1 has the function for operation of all cranes.
Notes
1. Receiver may be displayed with the indicator light in a crane or machine, the system has been under the takeover status;
2. While the receiver is loss of power and restarted after its being taken over by any transmitter system, the original takeover function is recovered.
The takeover process must be carried out again;
3. If the transmitter system is shut down or even lost while its ''release” button being not pressed, the receiver may not be taken over by any other transmitter system. The conditions for the system being normally taken over by any other transmitter system are as follows: a transmitter system with the operation authorization may be restarted; and the "release" button is pressed; or the receiver is started again after its being power off.
Special case (Master and Slave control functions)
The transmitter system 1 and the transmitter system 2 act as the Master and Slave control, respectively. The primary control transmitter system is equipped with a (A, A+B, B) transfer switch.
Under the normal mode, the transmitter system 1 independently controls Crane A, and the transmitter system 2 independently controls Crane B. If the primary control system is to obtain the operation authorization of Crane B, the following operation procedures must be performed:
1. Press the "release" button in the transmitter system 2;
2. For prevention of any operator's error, the transmitter system 2 is shut down;
3. Start the transmitter system 1;
4. The rotary switch in the transmitter system 1 is switched to "A+B' or 'B';
5. Press the “takeover" button of the transmitter system 1.
Thus, the transmitter system 1 has the function for operation of 2 cranes.
If the secondary control transmitter system 2 is to obtain the operation authorization of Crane B again, the following operation procedures must be performed:
1. The rotary switch in the transmitter system 1 is switched to "B" position;
2. Press the "release button in the transmitter system 1;
3. For prevention of any operator's error, the transmitter system 1 is shut clown:
4. Start the transmitter system 2;
5. Press the "takeover" button in the transmitter system 2.
Thus, the secondary control transmitter system 2 has the operation authorization of Crane B again.
