Applied Motion 3540i - Manual (Page 9)

-9- -12-
Limit Switches
The 3540i has two limit switch inputs, LIMIT CW and LIMIT CCW. By connecting
switches or sensors that are triggered by the motion of the motor or load, you can
force the 3540i to operate within certain limits. This is useful if a program error
could cause damage to your system by traveling too far.
The limit inputs are optically isolated. This allows you to choose a voltage for your
limit circuits of 5 to 24 volts DC. It also allows you to have long wires on limit
sensors that may be far from the 3540i with less risk of introducing noise to the
3540i. The schematic diagram of the limit input circuit is shown below.
3540i
Controller
Chip
2200
10K
+5V +5V
3
4
1
2
CW LIMIT+
CW LIMIT–
CCW LIMIT+
CCW LIMIT–
TLP621 or
NEC PS2501
inside 3540i
Connecting an Input to the SI-1 Motion Output
(Set SI-1 motion signal to "in position". SI-1 will trigger 3540i at end of each move.)
Connecting an Si5580, 7080i or MC8400
(When output closes, 3540i input goes low.)
Connecting an NPN Type Proximity Sensor to an 3540i Input
(When prox sensor activates, 3540i input goes low.)
Connecting a PNP Type Proximity Sensor to an 3540i input
(When prox sensor activates, 3540i input goes low.)
3540i
NPN
Proximity
Sensor
IN
COM
output
+
–
3540i
PNP
Proximity
Sensor
IN
output
+
–
COM
Jogging
Two of the 3540i input terminals are provided for jogging the motor. The inputs are
labeled "JOG CW" and "JOG CCW". Activating one of the inputs commands the
drive to move the motor at a pre-designated speed until the contact is opened. A
relay or mechanical switch can be used to activate the jog inputs. 5-24 volt circuitry
can also be used. The schematic diagram of the input circuit is shown below.
If you're using a switch or relay, wire one end to the JOG input and the other to the
power supply - terminal. Then connect the COM and power supply + terminals.
2200
2200
inside 3540i
COM
CWJOG
CCWJOG
+
5-24
VDC
SUPPLY
-
5-24
VDC
Power
Supply -
+
5-24
VDC
Power
Supply -
+
3540i
IN
COM
Si5580, 7080i
or MC8400
OUT+
OUT–
5-24
VDC
Power
Supply
-
+
3540i
IN
IN/JOG COM
SI-1 indexer
MOTION+
MOTION–
5-24
VDC
Power
Supply
-
+