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ID300/302 Integrated Motor Drive |
Connections
33
4.6.3 EIA 485 Serial Communication Port
• When using the communications port with a personal computer or centralized controller, an
isolation device must be included that has a rated voltage at least equal to the drive supply
voltage. Ensure that the correct fuses are installed at the drive input, and that the drive is
connected to the correct supply voltage.
• If a serial communications converter other than the Nidec Comms cable is used for connection
to other circuits which are classified as Safety Extra Low Voltage (SELV) (e.g., to a personal
computer), then a safety isolating barrier must be included to maintain the SELV classification.
Nidec Motor Corporation has designed an Isolated Serial Communications Lead to connect the drive
to IT equipment and is available as an optional device. Contact your sales representative for more
information.
The Isolated Serial Communications Lead has reinforced insulation as defined in IEC60950 for altitudes
up to 3,000 m (9,842 feet).
41
STO1
Safe Torque Off function (drive enable)
42
STO2
Terminal 31 Function
STO1 channel
Terminal 32 Function
STO2 channel
Type
Positive logic only digital input
Voltage Range
0 to +24 V
Absolute Maximum Applied Voltage
30 V
Logic Threshold
10 V ± 5 V
Low State Maximum Voltage for Disable to
SIL3 and PL e
5 V
Impedance
>4 mA @ 15 V, <15 mA @ 30 V (IEC 61131-2, type 1)
Low State Maximum Current for Disable to
SIL3 and PL e
0.5 mA
Response Time
Nominal: 12 ms
Maximum: 20 ms
41
0 V STO1
42
0 V STO2
Terminal 31 Function
Common connection for STO1
Terminal 32 Function
Common connection for STO2
WARNING
!
