YASKAWA Z1000 Technical Manual page 196

Ac drive bypass for hvac fans and pumps 208 v: 1/2 to 100 hp 480 v: 3/4 to 250 hp
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5.15 Z: Bypass Parameters
Setting 4: HAND-BYPASS
When drive powers up , the bypass will get a "HAND" command and needs an "OFF" command to stop.
n
Z1-07: Speed Reference Select
Selects the frequency reference source 1.
Note:
1. Default is 1 in bypass controller software versions VST800298 and later. Default is 0 in bypass controller software versions VST800297
and earlier.
2. If a Run command is input to the drive, but the frequency reference entered is 0 or below the minimum frequency, the AUTO or HAND
indicator LED on the HOA keypad will light and the OFF indicator will flash.
No.
Z1-07
Setting 0: HOA Keypad
Using this setting, the frequency reference can be input by:
• switching between the multi-speed references from d1-01 to d1-04.
• entering the frequency reference on the operator keypad.
Setting 1: Analog Input Terminals
Using this setting, an analog frequency reference can be entered as a voltage or current signal from terminals A1 or A2.
Voltage Input
Voltage input can be used at any of the two analog input terminals. Make the settings as described in
used.
Table 5.26 Analog Input Settings for Frequency Reference Using Voltage Signals
Terminal
Signal Level
0 to 10 V
with Zero Limit
A1
0 to 10 V
without Zero
Limit
0 to 10 V
with Zero Limit
A2
0 to 10 V
without Zero
Limit
Figure 5.54 Setting the Frequency Reference as a Voltage Signal at Terminal A1
Use the wiring example shown in
make sure Jumper S1 is set for voltage input.
Current Input
196
Name
Speed Reference Select
Parameter Settings
Signal Level
Function Selection
Selection
H3-01 = 0
(Frequency Reference Bias)
H3-01 = 1
H3-09 = 0
(Frequency Reference Bias)
H3-09 = 1
Jumper S1
Terminal A1/A2
Voltage/Current
Selection
V
I
A1 A2
0 to 10 V
2 k
Figure 5.54
for any other analog input terminals. When using input terminals A1 and A2,
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
Gain
H3-02 = 0
H3-03
H3-10 = 0
H3-11
Drive
V
I
A1 A2
+V 10.5 V, 20 mA power supply
A1 Analog Input 1
A2 Analog Input 2
AC Analog input common
Setting Range
0 to 3
Table 5.26
Notes
Bias
H3-04
Set Jumper S1 on the control
board to "V" for voltage input.
H3-12
Default
1
for the input

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