Parker IQAN-XA2, Instruction Book

Page: 38 / 39

3 6
Failure Modes
Appendix D
Instruction book, IQAN-XA2
Failure modes in PWM mode
Table below presents failure modes and effects on I/O.
Failure mode
Effect
a
a. Turning off outputs are controlled by CAN master and therefore delayed by maximum
2 bus cycles. If local error handling is enabled the output will turn off locally without
delay.
1 H-side Open PWMOUT error, output turned off
2 L-side (active) Open PWMOUT error, output turned off
3 L-side (passive) Open Not detected, will not influence function
4 H-side S hort-circuit to L-side
(active)
PWMOUT error, output turned off
b
b. Turned off by integrated protection functions in IC.
5 H-side S hort-circuit to L-side
(passive)
Not detected, will not influence function
6 H-side S hort-circuit to +BAT PWMOUT error, output turned off
7 H-side S hort-circuit to - BAT
PWMOUT error, output turned off
b
8 L-side (active) S hort-circuit to
+BAT
PWMOUT error, output turned off
b
9 L-side (active) S hort-circuit to
- BAT
Not detected, will not influence function
10 L-side (passive) S hort-circuit to
+BAT
Not detected, will not influence function
11 L-side (passive) S hort-circuit to
- BAT
Not detected, + and - direction activated without
movement as result.
12 H-side S hort-circuit to 2:nd
L-side (active)
PWMOUT error, output turned off
b
1 3 H-side S hort-circuit to 2:nd
L-side (passive)
Not detected, will not influence function
14 L-side S hort-circuit to 2:nd L-side
(active)
Not detected, will not influence function
15 L-side S hort-circuit to 2:nd L-side
(passive)
Not detected, will not influence function
16 Insufficient Voltage Not detected, lower max speed limit on function