JVL MIS17 Series User Manual page 22

2.2
2.2.3 General
The Controller is equipped with a total of 8 digital inputs. Each input can be used for a
variety of purposes depending on the actual application. Each of the inputs can be detect-
ed from the actual program that has been downloaded to the Controller or via serial
commands.
The Inputs are not optically isolated from other Controller circuitry. All of the Inputs
have a common ground terminal, denoted GND. Each Input can operate with voltages
in the range 5 (TTL) to 28VDC. Note that the Inputs should normally be connected to a
PNP output since a positive current must be applied for an input to be activated.
Note that CVO (control voltage output) is internally connected to the CVI supply termi-
nal in the PWR connector. This provides the facility that local sensors can be supplied di-
rectly from the controller. CVO is internally fused to a maximum allowable current of
750 mA
2.2.4 Connection of NPN Output
If an Input is connected to an NPN output, a Pull-Up resistor must be connected be-
tween the Input and the + supply. See the illustration above.
The value of the resistance used depends on the supply voltage. The following resistances
are recommended:
Supply Voltage
5-12VDC
12-18VDC
18-24VDC
24-28VDC
22 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
User Inputs
Note that IO1-8 share a
common ground (GND).
Select external
This ground is wired internally
or internal power
to the P- supply ground
supply to sensors
or similar
PNP Output
+
Power Supply
+7-28VDC
Inductive
sensor
or similar
This diagram is used if an NPN output is connected
Inductive
sensor
+
or similar
Power Supply
+7-28VDC
Recommended Resistance R
1kOhm / 0.25W
2.2kOhm / 0.25W
3.3kOhm / 0.25W
4.7kOhm / 0.25W
+24VDC Nom.
Max 750 mA
Input current
< 1mA @24V
Ground
From CVO (optional)
R
To one of IO1 to IO8
NPN Output
To GND
MISxxx User inputs
MISxxx Motor
CVO
(Derived from CVI)
IO1
(Input/output 1)
IO2
(Input/output 2)
IO3
(Input/output 3)
IO4
(Input/output 4)
IO5
(Input/output 5)
IO6
(Input/output 6)
IO7
(Input/output 7)
IO8
(Input/output 8)
GND
(Derived from P-)
TT2508-02GB