be used as active operator display to operate the control cabinet PC has to be
selected with a 24 V signal, see
chapter 12.1 "Function of the digital inputs" on
Missing screen output or incorrect screen resolution can be caused
by the following:
●
The resolution of the connected operator displays is different
●
The Y-repeater has been switched while booting the control cabi-
net PC
●
The voltage supply of the operator display has been switched on
after switching on the control cabinet PC
Connecting four operator displays via three Y-repeaters
Y-repeaters can be used in a cascade: Up to two further Y-repeaters can be con-
nected to one Y-repeater. Thus, four operator displays can be connected to one
control cabinet PC. As the screen signals are transmitted to all the operator dis-
plays, data can only be entered using the active operator display. Which of the
four operator displays can be used as active operator display to operate the con-
trol cabinet PC has to be selected with a 24 V signal. The circuitry is shown in
the following figure.
Control cabinet PC
SEL1
Y-repeater 1
Y-repeater 2
Y-repeater 3
Operator display no. 1
Operator display no. 2
Operator display no. 3
Operator display no. 4
SEL2
SEL2
1
2
1
2
1
2
Fig. 10-6: Connection of the Y-repeater with four operator displays
SEL1
SEL2
Operator display selected
0 V
0 V
Operator display 1
0 V
24 V
Operator display 2
24 V
0 V
Operator display 3
24 V
24 V
Operator display 4
Tab. 10-3: 24 V input signal circuit in case of four Y-repeaters
Bosch Rexroth AG
Mounting, demounting and electric installation
Y-Repeater
22/33
DOK-SUPPL*-VAC*01*****-IT03-EN-P