Bts 1X0 Monitor/Keyboard Switch - HEIDENHAIN iTNC 530 Service Manual

27.6

BTS 1x0 Monitor/Keyboard Switch

Two monitors (BTS 110: 2 x BF 120, BTS 150: 2 x BF 150) and two TE keyboards can be
connected to an MC 42x(B) with the BTS 1x0.
The two monitors are always active. Switchover between the two keyboard units is realized by
a 24 V switching input on the BTS 1x0.
A jumper on the PCB is used to determine which potentiometer should be active. The jumper is
on the upper PCB next to the ID plate.
Jumper setting
Assignment of the individual connections:
X1, X2, X4,
--> See "Keyboard Units" on page 27 – 495
X5 to X7:
--> See "Monitors" on page 27 – 493
Monitor and
keyboard
connections
Connection designation
X1
X2
X4
X5
X6
X7
Depending on the signal at X3, one of the keyboards at X4 or X5 is activated:
X3:
Switchover
between the
Signal at X3
keyboards
Terminal 1
0 V
+24 V
Power supply with double insulation in accordance with EN 61800-5-1.
X8:
Supply voltage for
BTS 1x0
Connecting terminal
1
2
Current consumption: Max. 100 mA.
27 – 498
Note
You cannot switch between the two touchpads on the TE 53x with the BTS 1x0.
You must connect both touchpads to the MC 42x (B/C) (possibly via the USB hub).
Note
The interface complies with the requirements of EN 61800-5-1 for "protective extra-low
voltage" (PELV).
Terminal 2
0 V
0 V
Active potentiometers
Always keyboard 1 (at X4)
Currently active keyboard
Monitor/Keyboard
Input BF 120 or BF 150
TE input
First TE output
Second TE output
First BF 120 or BF 150 output
Second BF 120 or BF 150 output
Active keyboard
At X4
At X5
Pin layout
+24 V
0 V
HEIDENHAIN Service Manual iTNC 530