Trouble Shooting - JetAir JET-3 Owner's Manual

Trouble Shooting

Blower Does Not Start
Top Line of HIM Display Not Showing
"Fault", but Displays "Not-Enabled"
Blower Does Not Start
Top Line of HIM Display Not Showing
"Fault", but Displays "Stopped"
Blower Does Not Start
Top Line of HIM Display Not Showing
"Fault", but Displays "Accelerating" or
"At Speed"
Blower Does Not Start
Top Line of HIM Displays "FAULT <NN>"
V1.5 ©2009 JetAir Technologies, LLC
• Check Panic Stop Button
• Check Safety Interlocks if in use.
Typically occurs when system is setup to
start automatically when power is applied.
System is stopped because a STOP is
invoked.
• Check Selector, turn to ON
• Cycle power
• Check Parameters (Autostart or Remote
Start Para. 90 = 11; Para. 362 = 7)
This condition may also occur when
Selector is turned to Auto and remote
customer PLC switch is open.
• Check Remote Switch
• Check Selector, turn to AUTO
• Check AC DRIVE Terminal Strip:
Terminals (2 & 9) and (7 & 8) must be
connected.
• Check Parameters (Autostart or Remote
Start Para. 90 = 11; Para. 362 = 7;
Speed Para 101 = nnn Hz)
• 0 Hz command given to motor for one
of two probable reasons:
1) If HIM Speed Control Start then Para.
90 = 18; Para. 362 = 0. Change speed
by entering speed on keypad in Hz, then
press <enter> key (300Hz max
continuous)
2) If Autostart or Remote Start then Para.
90 = 11; Para. 362 = 7. Change Speed
by Changing Para 101 to nnn Hz (300Hz
max continuous). Blower must be
stopped prior to changing Para 101
• Clear fault by pressing STOP button.
• Check Fault Condition Table in AC
DRIVE Users Manual and resolve root
cause of fault.
Common <conditions>
<4> Undervoltage: Power Off at AC
DRIVE. Normal during power down.
<5> Overvoltage: Too much regenerative
power to AC DRIVE.
• Check Para. 142 = 300.
<12> HW Overcurrent: The AC DRIVE is
drawing excessive current (amps)
Two probable causes:
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