Siemens 3TK28, Руководство пользователя

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Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
103
3.6.9 3TK2834 two-hand control device
3.6.9.1 Applications
Applications of the 3TK2834 two-hand control device
The 3TK2834 two-hand control device is suitable for installation in controllers for the
following presses:
● Hydraulic presses DIN EN 693,
● Eccentric presses and similar presses DIN EN 692,
● Screw presses DIN EN 692,
A maximum performance level PL
e
/Cat. 4 in accordance with DIN EN ISO 13849-1/SILCL 3
in accordance with IEC 62061 or Category III C acc. to DIN EN 574 can be achieved with
this device.
3.6.9.2 Description of function and connection information
The 3TK2834 two-hand control device has two enabling circuits as NO circuits and two
signaling circuits as NC circuits. The operating state and functioning are indicated by five
LEDs.
Pressing buttons S1 and S2 simultaneously (< 0.5 s) closes the enabling circuits. Releasing
one button, opens the enabling circuits. They will only close again when both buttons are
released and pressed again.
1.
Apply operating voltage to terminals A1 and A2. The operating voltage must be
disconnected at the same time as the driving energy of the press.
2. Closing the feedback circuit: Connect a jumper to Y11, Y12 or NC contacts of external
contactors.
3. Connecting the input circuit:
Connect button S1 to terminals Y21, Y22, Y23 and
button S2 to terminals Y31, Y32, Y33