Input terminals A1 and A2 can accept a current input signal. Refer to
to set terminals A1 and A2 for current input.
Table 5.27 Analog Input Settings for Frequency Reference Using a Current Signal
Terminal
Signal
Level
Parameter Settings
Notes
Signal Level
Selection
Function
Selection
Gain
Bias
A1
4 to 20 mA
H3-01 = 2
H3-02 = 0
(Frequency
Reference Bias)
H3-03
H3-04
Make sure to set Jumper S1 on the
control board to “I” for current
input.
0 to 20 mA
H3-01 = 3
A2
4 to 20 mA
H3-09 = 2
H3-10 = 0
(Frequency Bias)
H3-11
H3-12
0 to 20 mA
H3-09 = 3
Drive
A1 Analog Input 1
0 or 4 to 20 mA
AC Analog input common
+V 10.5 V, 20 mA power supply
A2 Analog Input 2
V
I
A1 A2
Jumper S1
Terminal A1/A2
Voltage/Current
Selection
V
I
A1 A2
Figure 5.55 Setting the Frequency Reference as a Current Signal to Terminal A2
Switching between Main/Auxiliary Frequency References
The frequency reference input can be switched between the analog terminals A1 and A2 using multi-speed inputs.
Setting 2: BACnet, MEMOBUS/Modbus, P1, or N2 Communications
This setting requires entering the frequency reference via the RS-485 serial communications port (control terminals TXRX+
and TXRX-).
Setting 3: Option Card
This setting requires entering the frequency reference via an option board plugged into connector CN5 on the bypass control
board. Consult the option card manual for instructions on integrating the drive with the communication system.
n
Z1-08: Run Command Select
Determines the source of the Auto Mode RUN command used by the Bypass Controller.
No.
Name
Setting Range
Default
Z1-08
Run Command Select
1 to 3
1
Setting 0: HOA Keypad
Setting 1: Bypass Controller Digital Input
This setting requires entering the Run command via the digital input terminals.
Setting 2: BACnet or MEMOBUS/Modbus Communications
This setting requires entering the Run command via serial communications by connecting the RS-485 serial communication
cable to control terminals TXRX+ and TXRX- on the terminal block.
Refer to MEMOBUS/Modbus Configuration on page
for instructions.
Setting 3: Option Card
This setting requires entering the Run command via the communication option board by plugging a communication option
board into the CN5 port on the control PCB. Refer to the option card manual for instructions on integrating the bypass into
the communication system.
n
Z1-09: HAND Mode Drive Speed Reference
The speed reference used when the Drive is running in HAND mode.
5.15 Z: Bypass Parameters
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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5
Programming
