Toro Reelmaster 5010- H Service Manual page 170

Fault Code
86 Logic voltage over 67.5 VDC has disabled #5
cutting unit
87 Logic voltage over 65 VDC has disabled
motor/generator
88 System bus voltage under 32 VDC has
disabled #1 cutting unit (main contactor is
engaged)
89 System bus voltage under 32 VDC has
disabled #2 cutting unit (main contactor is
engaged)
90 System bus voltage under 32 VDC has
disabled #3 cutting unit (main contactor is
engaged)
91 System bus voltage under 32 VDC has
disabled #4 cutting unit (main contactor is
engaged)
92 System bus voltage under 32 VDC has
disabled #5 cutting unit (main contactor is
engaged)
Electrical System
Fault Description
Page 5 - 30
Service Suggestions
If multiple cutting units are reporting this fault,
check 48 VDC batteries and motor/generator
operation
If 48 VDC batteries are at correct voltage with
engine OFF, consider connections between
motor/generator and motor/generator
controller are loose or faulty
If TEC controller has lost communication with
motor/generator, engine speed will not be
controllable and this fault may be displayed
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 31 will be displayed on the InfoCenter
If 48 VDC batteries are at correct voltage with
engine OFF, consider connections between
motor/generator and motor/generator
controller are loose or faulty
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 31 will be displayed on the InfoCenter
Check 35A reel motor fuse for #1 cutting unit
Check the 2 pin 48 VDC bus connector for the
#1 cutting unit
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 29 will be displayed on the InfoCenter
Check 35A reel motor fuse for #2 cutting unit
Check the 2 pin 48 VDC bus connector for the
#2 cutting unit
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 29 will be displayed on the InfoCenter
Check 35A reel motor fuse for #3 cutting unit
Check the 2 pin 48 VDC bus connector for the
#3 cutting unit
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 29 will be displayed on the InfoCenter
Check 35A reel motor fuse for #4 cutting unit
Check the 2 pin 48 VDC bus connector for the
#4 cutting unit
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 29 will be displayed on the InfoCenter
Check 35A reel motor fuse for #5 cutting unit
Check the 2 pin 48 VDC bus connector for the
#5 cutting unit
NOTE: If all 48V components (motor/generator
and cutting unit motors) have this fault, system
fault 29 will be displayed on the InfoCenter
Reelmaster 5010- H