Troubleshooting
‑100‑
10 Troubleshooting
10.1 Troubleshooting
See the following table for the causes and solutions of failures. If the problem cannot
be solved through the solutions in the following table, contact Inovance for technical
support.
Table 10–1 Fault causes and solutions
Fault Code Possible Cause Solution
STO
STO1 or STO2 is not
connected to the 24 V input
voltage.
Ensure that both STO1 and STO2 are
connected to the 24 V input voltage
signal.
E47.02
The input states of STO1 and
STO2 are inconsistent.
1. Ensure that STO1 and STO2 voltage
disconnection requests are triggered at
the same time.
2. The input circuit is abnormal. After
disconnecting the 24 V signal, an STO
input signal is still in "High" state. In this
case, contact Inovance for technical
support.
E47.03
The OV/UV of the 5 V power
supply or UV of the 1.2 V
power supply is detected.
Recover the power supply to normal
state. Contact Inovance for technical
support.
E47.04
The STO input circuit is
abnormal.
To fix the input circuit fault, contact
Inovance for technical Support.
E47.05
The STO pre‑charge circuit is
abnormal.
To fix the pre‑charge circuit fault, contact
Inovance for technical support.
E47.07
The flash detection is
abnormal.
Contact Inovance for technical support.
E47.08
The RAM detection is
abnormal.
Contact Inovance for technical support.
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