2.6 Control circuit 1 2.6.1 Details on the control circuit terminals 2 Input signal 3 5 5 6 7 8 9 10 *1 Set Pr.73, Pr.267 , and the voltage/current input switch correctly, then input an analog signal in accordance with the setting. Applying a voltage with the voltage/current input switch in the "I" position (current input is selected) or applying a current with the switch in the "V" position (voltage input is selected) could cause component damage of the inverter or analog circuits of output devices. (For the details, refer to page 131 .) 35 2.
INSTALLATION AND WIRING 2.6 Control circuit Type Terminal symbol Terminal name Terminal function description Rated specification Refer to page Contact input STF Forward rotation start Turn ON the STF signal to start forward rotation and turn it OFF to stop. When the STF and STR signals are turned ON simultaneously, the stop command is given. Input resistance: 4.7 kΩ, voltage when contacts are open: 21 to 26 VDC, current when contacts are short-circuited: 4 to 6 mADC 145 STR Reverse rotation start Turn ON the STR signal to start reverse rotation and turn it OFF to stop. RH RM RL Multi-speed selection Multi-speed can be selected according to the combination of RH, RM and RL signals.
SD Contact input common (sink) Common terminal for the contact input terminal (sink logic). — — External transistor common (source) Connect this terminal to the power supply common terminal of a transistor output (open collector output) device, such as a programmable controller, in the source logic to avoid malfunction by undesirable current. 24 VDC power supply common Common terminal for the 24 VDC power supply (terminal PC). Isolated from terminal 5.
PC External transistor common (sink) Connect this terminal to the power supply common terminal of a transistor output (open collector output) device, such as a programmable controller, in the sink logic to avoid malfunction by undesirable current. Power supply voltage range: 22 to 26.5 VDC, permissible load current: 30 mA 37 Contact input common (source) Common terminal for contact input terminal (source logic). 24 VDC power supply Can be used as a 24 VDC 30 mA power supply. Frequency setting 10 Frequency setting power supply Used as the power supply for an external device such as a frequency setting potentiometer or digital panel meter. 5 VDC (±0.2 VDC), permissible load current:
10 mA 131 2 Frequency setting (voltage) Inputting 0 to 5 VDC (or 0 to 10 VDC) provides the maximum output frequency at 5 V (or 10 V) and makes input and output proportional. Use Pr.73 to switch between input 0 to 5 VDC (initial setting) and 0 to 10 VDC.*1 Input resistance: 10 kΩ (±1 kΩ), Maximum permissible voltage: 20 VDC For current input, input resistance: 249 Ω (±5 Ω), permissible maximum current: 30 mA. Current input (initial status) Voltage inpu V V I I 131 4 Frequency setting (current) Inputting 4 to 20 mADC (or 0 to 5 V, 0 to 10 V) provides the maximum output frequency at 20 mA and makes input and output proportional.
This input signal is valid only when the AU signal is ON (terminal 2 input is invalid). Use Pr.267 to switch among input 4 to 20 mA (initial setting), 0 to 5 VDC, and 0 to 10 VDC. Set the voltage/current input switch in the "V" position to select voltage input (0 to 5 V / 0 to 10 V).*1 131 5 Frequency setting common Common terminal for the frequency setting signal input (via terminal 2 or 4). Do not earth (ground). — 131