Mitsubishi FR-A800 — 2.6.1 Details on the control circuit terminals

*1 The terminal function can be selected by Pr.178 to Pr.189 (Input terminal function selection) . (Refer to page 539 .) *2 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 switch ON (current input is selected) or applying a current with the switch OFF (voltage input is selected) could cause component damage of the inverter or analog circuits of output devices. (For the details, refer to page 513 .) *3 Sink logic is initially set for the FM-type inverter. *4 Source logic is initially set for the CA-type inverter. 70 2.

INSTALLATION AND WIRING 2.6 Control circuit Type Terminal symbol Common Terminal name Terminal function description Rated specification Refer to page Frequency setting 10E 5 Frequency setting power supply When connecting the frequency setting potentiometer at an initial status, connect it to terminal 10. Change the input specifications of terminal 2 using Pr.73 when connecting it to terminal 10E. 10 ±0.4 VDC, permissible load current: 10 mA 513 10 5 5 ±0.5 VDC, permissible load current: 10 mA 513 2 5 Frequency setting (voltage) Inputting 0 to 5 VDC (or 0 to 10 V, 0 to 20 mA) provides the maximum output frequency at 5 V (10 V, 20 mA) and makes input and output proportional.

Use Pr.73 to switch among input 0 to 5 VDC (initial setting), 0 to 10 VDC, and 0 to 20 mA. Set the voltage/ current input switch 1 for terminal 2 in the ON position to select current input (0 to 20 mA).*2 For voltage input, input resistance: 10 to 11 kΩ, maximum permissible voltage: 20 VDC. For current input, input resistance: 245 ±5 Ω, maximum permissible current: 30 mA. Voltage/current input switch switch2 switch1 2 4 513 4 5 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 2 for terminal 4 in the OFF position to select voltage input (0 to 5 V / 0 to 10 V).*2 Use Pr.858 to switch terminal functions. 513 1 5 Frequency setting auxiliary Input 0 to ±5 VDC or 0 to ±10 VDC to add this signal to the frequency setting signal input via terminal 2 or 4. Use Pr.73 to switch between input 0 to ±5 VDC and 0 to ±10 VDC (initial setting). Use Pr.868 to switch terminal functions. Input resistance: 10 to 11 kΩ, maximum permissible voltage: ±20 VDC. 513 Thermistor 10 2 — PTC thermistor input For receiving PTC thermistor outputs.

When PTC thermistor is valid (Pr.561 ≠ "9999"), terminal 2 is not available for frequency setting. Applicable PTC thermistor specification, overheat detection resistance: 0.5 to 30 kΩ (set by Pr.561) 421 Power supply input +24 SD 24 V external power supply input For connecting a 24 V external power supply. If a 24 V external power supply is connected, power is supplied to the control circuit while the main power circuit is OFF. Input voltage: 23 to 25.5 VDC, input current: 1.4 A or less 81