Control Signal Input/Output Description - Fastech Ezi-SERVO MINI Operating Manual

19. Control Signal Input/Output Description

1
Input Signal
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.
◆ CW, CCW Input
This signal can be used to receive a positioning pulse
command from a user's host motion controller.
The user can select 1-pulse input mode or 2-pulse input
mode. 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 connected to the driver directly. When the
level of input signal is more than 5V, Rx resistor is required.
If the resistor is absent, the drive can be damaged. In the
caseinput signal level is 12V, Rx value is 680ohm and 24V,
Rx value is 1.8Kohm.
◆ Servo On/Off Input
This input can be used only to adjust the position by
moving the motor shaft manually from the load-side.
By setting the signal [ON], the driver cuts off the power
supplied to the motor. Then, output position can be adjusted
manually. When setting the signal back to [OFF], the driver
resumes to supply the power to the motor and recovers the
holding torque. When driving a motor, the signal shall be set
[OFF].
◆ Alarm Reset Input
When a protection mode has been activated, a signal to this
alarm reset input cancels the Alarm output.
※ By setting the alarm reset input signal [ON], cancel the Alarm
output. Before cancel the Alarm output, have to remove the source
of alarm.
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2
Output signals from the driver are photocoupler
protected: Alarm, In-Position and the Line Driver
Outputs (encoder signal). In the case of photocoupler
outputs, the signal indicates the status of internal
photocouplers [ON: conduction],
[OFF: Non-conduction], not displaying the voltage
levels of the signal.
Pin No. Function
1 CW+
2 CW-
3 CCW+
4 CCW-
◆ Alarm Output
The Alarm output indicates [ON] when the driver is in a
normal operation. If a protection mode has been activated, it
goes [OFF]. User's host controller needs to detect this signal
and stop sending a motor driving command. When the driver
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.
[Caution] Only at the Alarm output port, the photocoupler isolation
Pin No. Function
13 Servo On/Off
◆ In-Position Output
14 Alarm Reset
In-Position signal is [ON] when positioning is completed. This
20 EXT_24VDC
signal is [ON] when the motor position error is within the value
set by the switch.
◆ Encoder Signal Output
The encoder signal is a line driver output. This can be used
to confirm the stop position.
Output Signal
is in reverse. When the driver is in normal operation the
Alarm output is [ON]. On the contrary when the driver is
in abnormal operation that start protection mode, the Alarm
output is [OFF].
Pin No. Function
11 Alarm
12 In-Position
19 EXT_GND
Pin No. Function
5 A+
6 A-
7 B+
8 B-
9 Z+
10 Z-
18 S-GND