Interface Methods; Switch Interface; Open Collector Interface; Ttl Interface - Intelligent Motion Systems IB Series Operating Instructions Manual

A power supply in excess of +5 volts may be used, however a current
limiting resistor MUST be placed in series with the input to limit the input
forward current to the recommended 7 milliamps. At no time can the input
forward current exceed 15 milliamps or damage may occur to the drive.
O p o t S
+ ( V
1
1
1
2
Table 4: Recommended Input Current Limiting Resistor Values
I n t e r f a c e M e t h o d s
The isolated logic inputs may be interfaced to the user's control system in a
variety of ways. In all cases the inputs are normally in a logic HIGH state when
left floating. For purposes of this manual we will show three interface methods:
1]
2]
3]
S w i t c h I n t e r f a c e
A switch connected between the input and the opto supply ground will sink the
input. If this method is used a SPST (Single-Pole, Single-Throw) switch works
well for enable and direction. A normally-open momentary switch works well
for reset. Figure 2 illustrates a SPST switch connected to the enable input.
Figure 2: IB Series "S" Version Switch Interface
4
s I o a l e t d n I p t u C r u e r t n i L m t i n i
u p p y l R e i s t s r o V a u l e
D C ) ( O h m s 5 % )
5 -
0 6 8 0
2 1 0 0 0
5 1 3 0 0
4 2 7 0 0

Switch Interface.

Open Collector Interface.

TTL Interface.

g R e s s i o t s r
R e i s t s r o V a u l e
( O h m s 1 % )
-
6 8 1
1 0 0 0
1 3 0 0
2 6 7 0
REV. 07.17.2003