www.fastech-motions.com - 27
◆ CW, CCW Input
This signal can be used to receive a positioning pulse
command from a customer host motion controller.
The customer can select 1-Pulse Input mode or 2-Pulse
Input mode(refer to switch No.1, SW 1). The input schematic of
CW, CCW is designed for 5V TTL level. When using 5V level
as an input signal, the resistor Rx is not used and connect to
the drive directly. When the level of input signal is more than
5V, Rx resistor is required. If the resistor is absent, the drive
will be damaged! If the input signal level is 12V, Rx value is
680ohm and 24V, Rx value is 1.8Kohm.
Pulse input signals of the drive are all photocoupler
protected. The signal shows the status of internal
photocouplers [ON : Conduction],
[OFF : Non-conduction], not displaying the voltage
levels of the signal.
◆ Alarm Reset Input
Release the alarm output of the drive where the protection
function is activated. When the Alarm Reset input is set to
[OFF], the alarm output is canceled. Remove the cause of the
alarm before releasing the alarm output. If the cause of the
alarm is not removed, the Alarm Reset input will not operate
normally even if it is set to [OFF].
※ By setting the alarm reset input signal [ON], cancel the Alarm
output. Before cancel the Alarm output, have to remove the source
of alarm.
◆ Servo On/Off Input
This input can be used only to adjust the position by manually
moving the motor shaft from the load-side. By setting the
signal [LOW], the drive cuts off the power supply to the motor.
Then, one can manually adjust output position. When setting
the signal back to [High], the drive resumes the power to the
motor and recovers the holding torque. When driving a motor,
one needs to set the signal [High].
Servo On / Off and Alarm Reset of the drive are
operated with voltage level [ON : High] and [OFF : Low].
Alarm and In-Position signals of the drive are operated
by [ON : Conduction] and [OFF : Non-conduction] of
open-drain circuit.
Input Signal
1
Output Signal
2
◆ Alarm Output
The Alarm output indicates [ON] when the drive is in a normal
operation. If a protection mode has been activated, it goes
[OFF]. A host controller needs to detect this signal and stop
sending a motor driving command. When the drive detects
an abnormal operation such as overload or over current of
the motor, it sets the Alarm output to [OFF], flashes the Alarm
LED, disconnect the power to a motor and stops the motor
simultaneously.
◆ In-Position Output
The In-Position output is used to send motor motion to the
host controller. When the movement of the motor is completed,
the In-Position output becomes [ON].
In-Position output is [ON] when the motor stops within the
position deviation set value.
Pin No.
Function
11
CW+
12
CW-
9
CCW+
10
CCW-
※ Please use the input voltage
5-24VDC. If the input is not
connected, it is in the High state.
If the input voltage is less than
0.6V, it is the Low state.
Ω
Ω
Pin No.
Function
7
Servo On/Off
8
Alarm Reset
Pin No.
Function
5
Alarm
6
In-Position
18. Control Signal Input/Output Description [Ezi-SERVOⅡ-BT-28 series]
