NI ISM-7412 Manuale utente
USER MANUAL
NI ISM-7411/7412
Ethernet Integrated Stepper
This manual describes the NI ISM-7411 and the NI ISM-7412 integrated steppers. It describes
electrical and mechanical characteristics of the devices, as well as I/O functionality.
Contents
Getting Started .......................................................................................................................... 2
Mounting the NI ISM-7411/7412............................................................................................. 3
Connecting the Power Supply .................................................................................................. 4
Choosing a Power Supply.........................................................................................................5
Voltage.............................................................................................................................. 5
Current .............................................................................................................................. 5
Connecting the Device Using Ethernet .................................................................................... 10
Option 1: Connect a Drive to Your LAN ......................................................................... 11
Option 2: Connect a Device Directly to Your PC ............................................................ 13
Option 3: Use Two Network Interface Cards (NICs)....................................................... 13
Connecting Input Signals.......................................................................................................... 14
Connection Examples: STEP & DIR................................................................................ 15
Connection Examples: EN................................................................................................ 16
Connecting the Digital Output.................................................................................................. 18
Configuring the NI ISM-7411/7412......................................................................................... 19
Motor ................................................................................................................................ 20
Control .............................................................................................................................. 21
Self Test............................................................................................................................ 24
Reference Materials .................................................................................................................. 24
Torque-Speed Curves ....................................................................................................... 24
Heating.............................................................................................................................. 25
Mechanical Outlines ......................................................................................................... 28
Technical Specifications........................................................................................................... 29
Amplifier .......................................................................................................................... 29
Motor ................................................................................................................................ 30
Digital Inputs .................................................................................................................... 30
Analog Input ..................................................................................................................... 30
Digital Output ................................................................................................................... 30
+5V User Output .............................................................................................................. 30
Physical............................................................................................................................. 31
Alarm Codes .....................................................................................................................31
Worldwide Support and Services ............................................................................................. 32
2|ni.com |NI ISM-7411/7412 Integrated Stepper User Manual
Figure 1. Block Diagram
Getting Started
You will need the following items to get started with your NI ISM-7411/7412:
12 VDC to 70 VDC power supply. NI PS-12 (NI part number 748906-01) or
NI PS-13 (NI part number 748907-01) recommended.
Tool for inserting wires into the connector
A PC running Microsoft Windows 8.1/8/7/Vista/XP, with an available Ethernet port
A CAT5 Ethernet cable (not included)
NI Stepper Configuration Utility, available from ni.com/downloads
Refer to Choosing a Power Supply for more information.
+
STEP+
AIN
GND
+5V
STEP–
DIR+
DIR–
EN+
EN–
OUT+
OUT–
–Power
Conn
12-70 VDC
External
Power Supply
100 Mbit Ethernet Comm
Conn
I/O Connector
Optical
Iso
Digital
Filter
Software
Filter
Software
Filter
Software
Filter
Digital
Filter
Digital
Filter
DSP
Driver
Control
3.3 VDC
Internal
Logic
Supply
Voltage
Te m p
Det.
5 VDC
Power Supply
MOSFET
PWM
Power
Amplifier
Motor
Encoder
Over
Current
Detection
Status
Optional
GND
+5 VDC (50 mA max)
Optical
Iso
Optical
Iso
Optical
Iso
NI ISM-7411/7412 Integrated Stepper User Manual |© National Instruments |3
Figure 2 shows an overview of the connectors on the NI ISM-7411/7412 integrated stepper.
Figure 2. NI ISM-7411/7412 Integrated Stepper Connectors
Mounting the NI ISM-7411/7412
Mount your NI ISM-7411/7412 using four #6 or #8 screws. Securely fasten the
NI ISM-7411/7412 to a smooth, flat metal surface to conduct heat away from the motor. To
prevent overheating, forced airflow from a fan may be required. Refer to the Heating section for
more information.
Caution Never use your NI ISM-7411/7412 in a space where there is no airflow or
where other devices cause the surrounding air to be higher than 40 °C.
Caution Never put the NI ISM-7411/7412 where it can get wet or where metal or
other electrically conductive particles can contact the circuitry.
Caution Always provide air flow around the drive. When mounting multiple
NI ISM-7411/7412 integrated steppers near each other, maintain at least one half inch
of space between devices.
1 Status LED
2 DC Power Connector
3Ethernet Port
3I/O Connector
4 Rotary Switch
4 Mounting Hole
12
3
6
4
5
4|ni.com |NI ISM-7411/7412 Integrated Stepper User Manual
Connecting the Power Supply
Refer to Choosing a Power Supply for more information.
1. Use 1.02 mm to 0.81 mm diameter (18 to 20 AWG) gauge stranded wire for connections.
2. Connect the power supply positive (+) terminal to the connector terminal labeled V+.
3. Connect power supply negative (-) terminal to the connector terminal labeled V- .
The NI ISM-7411/7412 contains an internal fuse that connects to the power supply positive (+)
terminal. This fuse is not user-replaceable. If you want to install a user-replaceable fuse in your
system, install a fast-acting 4 A fuse in line with the positive (+) power supply lead. Figure 3
shows the NI ISM-7411/12 connections.
Figure 3. Orientation of the NI ISM-7411/7412 Power Connector
Caution Do not reverse the wires. Reverse connection will damage your drive and
void your warranty.
When you rapidly decelerate a load from a high speed, much of the kinetic energy of that load
transfers back to the power supply. This transfer can trigger the overvoltage protection of a
switching power supply, causing it to shut down. Unregulated power supplies generally do not
have overvoltage protection and have large capacitors for storing energy coming back from the
drive. NI offers the SMD-7700 regeneration clamp, part number 748908-01, to solve this
problem.
+VDC GND
NI ISM-7411/7412 Integrated Stepper User Manual |© National Instruments |5
Choosing a Power Supply
NI offers two power supplies for the NI ISM-7411/7412:
• NI PS-12 (24 V, 6.3 A)
• NI PS-13 (48 V, 6.7 A)
Voltage
Your motor can provide optimum performance between 24 and 48 volts DC. Choosing the
voltage depends on the performance needed and thermal performance. Higher voltages will give
higher speed performance but will cause the motor to operate at higher temperatures. Using
power supplies with voltage outputs that are near the drive maximum may reduce the operational
duty-cycle significantly. Refer to the charts in Reference Materials to determined thermal
performance at different power supply voltages.
Note If you choose an unregulated power supply, ensure the no-load voltage of the
supply does not exceed 60 VDC.
Current
The power supply current required by the motor at various voltages is shown in the following
charts. The supply current flowing into the motor may be less than the motor phase current,
because the motor amplifier converts high voltages and low currents from the DC power supply
into the higher current and lower voltage required by the motor. Using a higher voltage power
supply will increase high speed torque, but will also increase motor heating.
The current draw is significantly different at higher speeds depending on the motor torque load.
Estimating your current needs may require a good analysis of the load the motor will encounter.
6|ni.com |NI ISM-7411/7412 Integrated Stepper User Manual
Figure 4. NI ISM-7411 Behavior, 12 V Power Supply
Figure 5. NI ISM-7411 Behavior, 24 V Power Supply
0
20
40
60
80
100
120
140
0 1020304050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
Amps
TorqueSupply Current Supply Current No Load
0
20
40
60
80
100
120
140
01020304050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
Amps
TorqueSupply Current Supply Current No Load
NI ISM-7411/7412 Integrated Stepper User Manual |© National Instruments |7
Figure 6. NI ISM-7411 Behavior, 48V Power Supply
Figure 7. NI ISM-7411 Behavior, 70 V Power Supply
0
20
40
60
80
100
120
140
01020304050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
Amps
TorqueSupply Current Supply Current No Load
0
20
40
60
80
100
120
140
01020304050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
Amps
TorqueSupply Current Supply Current No Load
8|ni.com |NI ISM-7411/7412 Integrated Stepper User Manual
Figure 8. NI ISM-7412 Behavior, 12 V Power Supply
Figure 9. NI ISM-7412 Behavior, 24 V Power Supply
0
50
100
150
200
250
0
10 20 30 40 50
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
Speed (RPS)
Torque (Oz-In)
Amps
TorqueSupply Current Supply Current
No Load
0
50
100
150
200
250
01020304050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
Amps
TorqueSupply Current Supply Current
No Load
NI ISM-7411/7412 Integrated Stepper User Manual |© National Instruments |9
Figure 10. NI ISM-7412 Behavior, 48V Power Supply
Figure 11. NI ISM-7412 Behavior, 70 V Power Supply
If you plan to use a regulated power supply, you may encounter a problem with regeneration. If
you rapidly decelerate a load from a high speed, much of the kinetic energy of that load is
transferred back to the power supply. This can trip the overvoltage protection of a switching
power supply, causing it to shut down. Unregulated power supplies are better suited for
applications with significant regeneration as they generally do not have overvoltage protection
and have large capacitors for storing energy coming back from the drive. Refer to Connecting
the Power Supply for more information.
0
50
100
150
200
250
01020304050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
Amps
TorqueSupply Current Supply Current
No Load
0
50
100
150
200
250
010 2030 4050
Speed (RPS)
Torque (Oz-In)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
Amps
TorqueSupply Current Supply Current
No Load
10 |ni.com |NI ISM-7411/7412 Integrated Stepper User Manual
Connecting the Device Using Ethernet
This process requires three steps:
1. Physically connect the device to your network (or directly to the PC).
2. Set the drive IP address.
3. Set the appropriate networking properties on your PC.
Your device includes a 16 position rotary switch for setting its IP address. The factory default
address for each switch setting is shown in the table below.
The IP address corresponding to positions 1 through E can be changed using the NI Stepper
Configuration Utility software (use Quick Tuner for servo drives). Setting 0 is always
10.10.10.10, the universal recovery address.
Setting F is DHCP, which commands the device to get an IP address from a DHCP server on the
network. The IP address automatically assigned by the DHCP server may be dynamic or static
Table 1. IP Address Rotary Switch Settings
Position IP Address
010.10.10.10
1192.168.1.10
2192.168.1.20
3192.168.1.30
4192.168.0.40
5192.168.0.50
6192.168.0.60
7192.168.0.70
8192.168.0.80
9192.168.0.90
A192.168.0.100
B192.168.0.110
C192.168.0.120
D192.168.0.130
E192.168.0.140
FDHCP
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