Omron R88D-1SN ECT Series User Manual

8 Safety Function
8 - 4
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
8-2 STO Function via Safety Input Signals
This section explains how to use the STO function via the safety input signals.
The following I/O signals are available to use the STO function: the safety input signals (SF1 and SF2)
and the external device monitoring (EDM) output signal.
Refer to
3-1-5 Control I/O Connector (CN1) Specifications on page 3-27 for I/O signal connection and
external signal processing.
Two safety input circuits are installed to operate the STO function.
• When safety input 1 or 2 turns OFF, the STO function will start operating within 5 ms after the input,
and the motor output torque will be cut off.
• Connect the equipment so that the safety input circuit turns OFF when the STO function is activated.
• Set the operation when the safety input turns OFF in the Stop Selection – Shutdown Option Code
(3B20-01 hex).
Precautions for Correct Use
L pulses for self-diagnosis of safety equipment
When you connect a safety device, such as a safety controller or a safety sensor, the safety
output signal of the device may include L pulses for self-diagnosis. To avoid malfunction due to
the L pulses for self-diagnosis, a filter that removes the L pulses is built into the safety input cir-
cuit. If the OFF time of the safety input signal is 1 ms or less, the safety input circuit does not
recognize it as OFF. To make sure that OFF is recognized, maintain the OFF status of safety
input signal for at least 5 ms.
8-2-1 I/O Signal Specifications
Safety Input Signals
Signal Symbol Pin No. Description
Safety input 1 SF1+ CN1-3,23 The upper arm drive signal of the power transistor inside the
Servo Drive is cut off.
SF1- CN1-4,24
Safety input 2 SF2+ CN1-5,25 The lower arm drive signal of the power transistor inside the
Servo Drive is cut off.
SF2- CN1-6,26
For self-diagnosis L pulse
1 ms or less
5 ms or less
Normal operation
STO status
Safety
Input signal
Servo Drive
operation
5 ms or more

Omron R88D-1SN ECT Series Specifications

General

Feedback	Incremental encoder, Absolute encoder
Position Control	Yes
Speed Control	Yes
Torque Control	Yes
Communication Interface	EtherCAT
Power Supply Voltage	200 to 240 VAC
Output Power	0.1 to 1.5 kW
Input Voltage Range	170 to 264 VAC
Control Method	Sine-wave PWM control
Main Circuit Power Supply	200-240 VAC
Applicable Motor Capacity	0.1 to 1.5 kW
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheating, Encoder Error
Ambient Operating Temperature	0 to 55°C
Vibration Resistance	4.9 m/s² (10 to 55 Hz)
Shock Resistance	98 m/s2
Weight	Varies by model