Omron EasySpeed 3G3JE, User Manual

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Chapter 2
2-9
Design
Note If P11 (Frequency reference selection) is set to T.C (Temperature controller time-shared pro-
portional pulses), multi-step speed reference 0 (SS0) will be the temperature controller time-
proportional pulse input and multi-step speed reference 1 (SS1) will be ignored.
■
Control Circuit Terminals for Communications Models
● Relation between Control Circuit Terminals and Frequency Reference
Multi-step speed reference 0 (SS0) and multi-step speed reference 1 (SS1) can be used together to
select one of the following frequency references.
Note Multi-step speed references are supported only for Standard Models.
● Relation between Control Circuit Terminals and Forward/Reverse Commands
The operation commands from control input are as follows:
Symbol Name Function Specifications
Input RS-485 (+) RS-485 communications
terminals
Refer to the separate Communications Manual for commu-
nications specifications, wiring, communications com-
mands, and other related information.
RS-485 (
−
)
24 VDC Internal 24-V power sup-
ply The 24-VDC power supply input for
Inverter control circuits. Do not use this
power supply for any other purpose. Photocoupler
(24 V DC, 5 mA per
input)
STF Forward/stop command Executes forward operation.
STR Reverse/stop command Executes reverse operation.
SC External power supply
common Common terminal for when internal 24-
V power supply is not used.
Output ALM (+) Alarm output Turns ON when an alarm occurs. Open collector
(30 V DC, 50 mA
max.)
ALM (
−
)
STA (+) Multi-function output Turns ON when the operating status
selected in P12 (Multi-function output
selection) is reached.
STA (
−
)
Multi-step speed reference SS0 SS1
Frequency reference 1 (SP1) OFF OFF
Frequency reference 2 (SP2) ON OFF
Frequency reference 3 (SP3) OFF ON
Frequency reference 4 (SP4) ON ON
Operation Command STF STR
Stop OFF OFF
Forward ON OFF
Reverse OFF ON
Stop ON ON