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２１．Troubleshooting
When abnormality occurred, please check it as follows.
Ｎｏ．
Problem
Checking point
Solution
１
Display does not
appear at all.
→Has it connected with the
rear terminal correctly?
↓
↓
→Does a sensor power
supply short-circuit?
(Or it is an overcurrent)
→Connect correctly according to
"Connecting terminal boards
（Refet to P.8）
→Sensor specifications confirmation.
Take off a sensor and check the operation.
→Initialize（Refer to P.14）
When display still does not
appear, have it serviced.
２
Unusual
・LED lighting, key
・switch operation,
・preset output,
・analog output
→Check with the test mode.
（Refer to P.12）
→Initialize（Refer to P.14）
When it still does not
resume normal status,
have it serviced.
３
Remains at "0"
→Is the setting for each
mode correct?
↓
→Is the sensor input
normal?
↓
↓
↓
→Is the distance of the
sensor normal?
↓
↓
→Is the input system of this
meter suitable for the
output signal of the sensor?
→Check the setting again.
（Refer to P.16-P.33）
→Check the connection of the
sensor（Refer to P.9）.
Check with the test mode
（Refer to P.12）.
→The sensor lamp flash is
confirmed. A sensor is
tested. “ON/OFF”
When it still does not
resume normal status,
have it serviced.
４
Indicator is flashing
“99999”.
（Error indication）
→Check whether the
scaling is not too large
→Influence of noise.
→Change the scaling data.
（Refer to P.17-19
for Mode No.1-4）
→Noise countermeasure
（Refet to P.43）
Summary of Contents for SP-556 series
Page 45: ...42 Unredeemable type Option DM Fig 28...
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