
SmartStep 2 servo drive 3
AC Servo systems
Control I/O (CN1) specifications
Encoder connector (CN2) specifications
Power supply and alarm indicator (PWR and ALM)
Pin Symbol Name Function
1 +24 Vin DC power supply input for control Power supply input terminal (12 to 24 VDC) for sequence input (pin 1).
2 RUN RUN Command Input ON: Servo ON (Starts power to Servomotor.)
3 RESET Alarm Reset Input ON: Servo alarm status is reset. 1
Must be ON for 120 ms min.
1. Some alarms cannot be cleared using this input. For details, refer to 8-2 Alarm Table.
4 ECRST/ VSEL2 Deviation Counter Reset Input or
Internally Set Speed Selection 2 Input
5 GSEL/ VZERO/ TLSEL Gain Switch Input, Zero Speed
Designation Input, or Torque Limit
Switch Input
6 GESEL/ VSEL1 Electronic Gear Switch Input or
Internally Set Speed Selection 1 Input
Electronic Gear Switch Input or internally Set Speed Selection 1 Input *2
7 NOT Reverse Drive prohibit Input Reverse rotation overtravel input.
OFF: Prohibited, ON: Permitted
8 POT Forward Drive prohibit Input Forward rotation overtravel input.
OFF: Prohibited, ON: Permitted
22 +CW/ PULS/ FA Reverse Pulses Input, Feed Pulses In-
put, or 90º Phase difference Pulses
(Phase A)
Input terminals for position command pulses.
Line-driver input: Maximum response frequency: 500 kpps
Open-collector input: Maximum response frequency: 200 kpps
23 -CW/ PULS/ FA
24 +CCW/ SIGN/ FB Forward Pulses Input, Direction signal,
or 90º Phase Difference Pulses
(Phase B)
25 −CCW/SIGN/ FB
9 /ALM Alarm Output When the Servo Drive generates an alarm, the output turns OFF. 2
2. This is OFF for approximately 2 seconds after turning ON the power.
10 INP/TGON Positioning Completed Output or Ser-
vomotor Rotation Amount Detection
Output
11 BKIR Brake Interlock Output Outputs the holding brake timing signals. Release the holding brake when this
signal is ON.
12 WARN Warning Output The signal selected in the Warning Output Selection (Pn09) is output.
13 OGND Output Ground Common Ground common for sequence outputs (pins 9, 10, 11, and 12).
14 GND Ground
Common
Common for Encoder output and phase-Z output (pin 21).
15 +A Encoder
Phase-A Output
These signals output encoder pulses according to the
Encoder Dividing Ratio Setting (Pn44).
This is the line-driver output (equivalent to RS-422).
16 −A
17 −B Encoder
Phase-B Output
18 +B
19 +Z Encoder
Phase-Z Output
20 −Z
21 Z Phase-Z Output Outputs the phase Z for the Encoder (1 pulse/rotation).
This is the open-collector output.
Pin Symbol Name Function
1 E5V Encoder power supply +5 V Power supply output for the encoder 5 V, 70 mA
2 E0V Encoder power supply GND
3 NC Do not connect anything to these pins.
4NC
5 S+ Encoder + phase S I/O RS-485 line-driver I/O
6S−Encoder − phase S I/O
Shell FG Shield ground Cable shield ground
Indicator Color Status
PWR Lit green Main power is ON.
Lit orange Flashes at a 1-second intervals when
there is a warning (i.e., overload, ex-
cessive regenerative energy, or fan
speed error).
Lit red An alarm has occurred.
ALM Lights when an alarm has occurred
I106E-EN-01+SS2_drive+Datasheet.fm Seite 3 Mittwoch, 29. April 2009 3:55 15