Star TSP400 Installation Manual page 38

Drive circuit
The recommended drive circuit is shown.
F.G
TR1
M-GND
TR2
M-GND
+5V
TR3
NOTES:
1. Peripheral units #1 and #2 cannot be driven simultaneously.
When driving a device continuously, do not use drive duty above 20%.
2. Compulsion switch status is available as status data.
3. Resistance for coils L1 and L2 is not less than 24 ohms.
4. Absolute maximum ratings for diodes D1 and D2 (at Ta=25˚C):
Average rectified current Io = 1A
Maximum forward surge current (60Hz,1-cycle sine wave) I
5. Absolute maximum rating for transistors TR1 and TR2 (at Ta = 25˚C):
Collector current Ic = 2A
D1
+24V
7824
D2
R1
R2
– 35 –
[Drive output 24V, max. 1.0 A]
1
With shield
2
L1
3
4
L2
5
Peripheral
unit 2
6
Frame
ground
Peripheral
unit 1
R3
4.7kΩ
1/4W
Compulsion
switch
=40A
FSM
P 1996.1