H5: Memobus/Modbus Serial Communication - YASKAWA U1000 Series Technical Manual

■ H4-07, H4-08: Multi-Function Analog Output Terminal FM, AM Signal Level Selection
Sets the voltage output level of U parameter (monitor parameter) data to terminal FM and terminal AM using parameters
H4-07 and H4-08.
No.
H4-07 Multi-Function Analog Output Terminal FM Signal Level Selection
H4-08 Multi-Function Analog Output Terminal AM Signal Level Selection
Setting 0: 0 to 10 V
Setting 1: -10 V to 10 V

◆ H5: MEMOBUS/Modbus Serial Communication

Through the drives built in RS-422/485 port (terminals R+, R-, S+, S-), serial communication is possible using
programmable logic controllers (PLCs) or similar devices running the MEMOBUS/Modbus protocol.
The H5- parameters are used to set up the drive for MEMOBUS/Modbus Communications.
Modbus Serial Communication on page 562
◆ H6: Pulse Train Input/Output
A one track pulse train signal with a maximum frequency of 32 kHz can be input to the drive at terminal RP. This pulse
train signal can be used as the frequency reference, for PID functions, or as the speed feedback signal in V/f Control.
The pulse output monitor terminal MP can output drive monitor values as a pulse train signal with a maximum frequency
of 32 kHz. It can be used in sinking or sourcing mode.
Use parameters H6- to set the scale and other aspects of the pulse input terminal RP and pulse output terminal MP.
H6-01: Pulse Train Input Terminal RP Function Selection
■
Selects the function of pulse train input terminal RP.
No.
H6-01
Setting 0: Frequency reference
If the pulse input is set for this function and the frequency reference source is set to pulse input (b1-01, b1-15 = 4), the
drive reads the frequency value from terminal RP.
Setting 1: PID feedback value
Using this setting, the feedback value for PID control can be supplied as a pulse signal at terminal RP.
Control on page 201 for details on PID control.
Setting 2: PID setpoint value
Using this setting, the setpoint value for PID control can be supplied as a pulse signal at terminal RP.
Control on page 201 for details on PID control.
Setting 3: Speed feedback (V/f Control with Simple Speed Feedback)
This setting can be used in V/f control to increase the speed control precision by using a motor speed feedback signal.
The drive reads the speed feedback from terminal RP, compares it to the frequency reference and compensates the motor
slip using a speed regulator (ASR, setup in the C5- parameters) like shown in
RP is incapable of detecting motor direction, a separate way of determining motor direction still needs to be set up:
1.
Using a Digital Input
If a digital input programmed for "Forward/reverse detection" (H1- = 7E) is closed, the drive assumes
reverse rotation. If open, then the drive assumes that the motor is rotating forwards.
2.
Using the Frequency Reference Direction
If no digital input is set to "Forward/reverse detection" (H1- = 7E), the drive uses the direction of the
frequency reference as the direction for the speed feedback detected at the pulse input.
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
Name
for detailed descriptions of the H5- parameters.
Refer to Using the Pulse Train Output on page 114
Name
Pulse Train Input Terminal RP Function Selection
5.7 H: Terminal Functions
Setting Range
0, 1
0, 1
Refer to MEMOBUS/
Setting Range
0 to 3
Refer to b5: PID
Refer to b5: PID
Figure 5.83. Because input terminal
Default
0
0
for details.
Default
0
5
293