YASKAWA E7N Technical Manual page 101

Options - P "Pneumatic Pressure Transducer"; Bypass with pneumatic input for speed
control:
Hand mode speed command from Keypad/Operator.
Auto mode speed command input signal from the pneumatic transducer, or 4-20 mA applied to Terminal TB5-9
(Drive terminal A2).
Auto mode run/stop contact closure for Drive and Bypass applied to terminals TB1-2 and TB1-9.
Significant
Parameter Setting
b1-01 = 1: Terminals (default)
H3-08 = 2: 4-20 mA (default)
H3-09 = 0: Frequency Bias
H1-03 = 3: Multi-Step Ref 1
(default)
Options - J, U, V or L "Serial Communications"; Bypass with serial communication for control:
Hand mode speed command from Keypad/Operator.
Auto mode speed command input signal from serial communication.
Auto mode run/stop command for Drive from serial communication.
Auto mode run/stop command for Bypass from serial communication.
Significant
Parameter Setting
b1-01 = 0: Operator
H1-03 = 6C: Com/Inv Sel 2
H5-02 = Baud Rate
H5-07 = RTS Control
H5-08 = Protocol Selection
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Drive Operational Result
Speed command source = Terminals
Drive Terminal A2 is programmed for 4-20 mA (Transducer output is 4-20 mA)
(Note – Control PCB DIP switch S1-2 must also be ON)
Drive Terminal A2 function is set to "bias" the terminal A1 input. Terminal A1 is
not used, therefore the A2 "bias" signal becomes the speed command.
A Drive terminal S5 input contact closure selects d1-02 (keypad) as a preset
speed. This input contact is closed when H/O/A = Hand.
Drive Operational Result
Speed command source = Keypad/Operator (d1-01)
A Drive terminal S5 input contact closure allows b1-01 to select d1-01 (key-
pad) as a preset speed. An open contact selects serial com for speed command
and run/stop. This input contact is closed when H/O/A = Hand.
Each protocol requires the baud rate indicated in Table 5.2
Each protocol requires the Request to Send control indicated in Table 5.2
Drive communicates via protocol selected. 0: Modbus, 1: N2 or 2: FLN
Programming 5 - 8