Hitachi SJ100DN DeviceNet Series Instruction Manual page 35

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Operations and Monitoring
Intelligent Input Summary
Intelligent input terminals for SJ100DN inverters include the standard SJ100 input
terminals (see Chapter 3 in SJ100 Inverter Manual), with the following changes:
• Add [STA], [STP], and [F/R] terminals (three-wire interface inputs)
• Add [DNT] terminal (DeviceNet Select)
• Add [OPE] Force Operation from Digital Operator input terminal
• Remove [AT] intelligent input terminals
The added terminals are described in the sections that follow.
Three-wire Interface Operation
The 3-wire interface is an industry standard motor control interface. This function uses
two inputs for momentary contact start/stop control, and a third for selecting forward or
reverse direction. To implement the 3-wire interface, assign 20 [STA] (Start), 21 [STP]
(Stop), and 22 [F/R] (Forward/Reverse) to the three intelligent input terminals. Use
momentary contact for Start and Stop. Use a selector switch such as SPST for the
Forward/Reverse input. Be sure to set the operation command selection A_02=01 for
input terminal control of motor. If you have a motor control interface that needs logic-
level control (rather than momentary pulse control), use the [FW] and [RV] inputs
instead.
Option Terminal
Code Symbol
20 STA
21 STP
22 F/R
Valid for inputs:
Required settings:
Notes:
•
The [STP] input stops the motor, whether it is under
keypad control or under network control.
•
[STP] is assigned to terminal [2} as a factory
default setting. This feature is especially important
for network-controlled applications.
•
If you do not assign the [F/R] intelligent input
terminal, the three-wire operation will be limited to
the forward direction only.
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Input
Function Name
State
Start Motor ON
OFF
Stop Motor ON
OFF
FWD/REV ON
OFF
C_01, C_02, C_03
A_02=01
Description
Start motor rotation on momentary contact (uses
acceleration profile)
No change to motor operation
Stop motor rotation on momentary contact (uses
deceleration profile)
No change to motor operation
Select reverse direction of rotation
Select forward direction of rotation
Example (requires input configuration—
see Chapter 3 in SJ100 Instruction Manual):
STP
F/R STA
L 3 2
See I/O specs in the SJ100 Instruction Manual
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