Trouble shooting
Instruction manual 854 ATG Page 47
6.2 XPU error code (item EP)
The XPU error code is a three-digit number. When the XPU detects an error about a certain item, that item
follows the error code, separated by a space.
For instance: 067 LL : invalid level format in item LL.
Some XPU error codes of item EP are listed below, with suggestions for solving the problem. For a complete
overview, refer to “Item documentation for Honeywell Enraf series 854 ATG” and in the item help of the
service tool Engauge.
000 No error
0
11 NOVRAM version error New software is installed; requires NOVRAM initialization
014 NOVRAM operation error Set item 03 to ‘@’; check all settings, there may be an error
017 NOVRAM init failed NOVRAM seize too small. Use XPU-1 board with larger NOVRAM seize
021 SPU start-up failure SPU board not well connected in backplane, or defective.
033 SPU fatal error SPU board not well connected in backplane, or defective.
036 Jumper setting changed Jumper setting changed while power was on. Give reset (RS) command.
040 Missing SPU board Missing SPU board or board not well connected in backplane, or defective.
051 Unknown item Item not known to 854 ATG, check for correct item.
053 Invalid item length Wrong data field length, check for correct item setting.
056 Wrong protection level First enter protection level 1 or 2.
067 Invalid level format Check item LD, then give the setting in the correct level format.
071 Invalid decimal separator Check item DP, then give the setting with the correct decimal separator.
076 Invalid floating point format Give the setting in the correct floating point format (refer to section 3.3.3).
081 Command disabled by HC Command is currently disabled by the host command (HC)
082 Invalid password Give the correct password for W1 and W2.
096 Password read not allowed Password read access not allowed
101 Watchdog error The watchdog reset is a sign that there is a serious fault, caused by interference,
or a faulty XPU board.
136 SPU board not responding Missing SPU board, or SPU board not well connected in backplane, or SPU
board defective.
137 Optional board not responding Missing optional board, or optional board not well connected in backplane, or
optional board defective.
999 Fatal XPU error Serious internal XPU software error; check contents of item 00 and report to
Honeywell Enraf Delft.
6.3 SPU error code (item ES)
T
he SPU error code is a four-digit number. Some SPU error codes of item ES are listed below, with
suggestions for solving the problem. For a complete overview, refer to “Item documentation for Honeywell
Enraf series 854 ATG” and in the item help of the service tool Engauge.
0000 No error
0104 F0 range error Frequency constant 0 value is out of range (probably after NOVRAM init). Give
correct setting in item F0, or calibrate force transducer (refer to section 5.5).
0407 Force transducer initialisation error The force transducer does not start-up correctly, or the motor unit has not been
unlocked.
0553 Reference encoder error 1 A minimum correlation between the reference encoder table and the values read
0554 Reference encoder error 2 from the actual reference encoder is not achieved. Either stepper motor or the
reference encoder is defective or filthy. Check motor and reference encoder
(excessive oil?).
0555 Reference encoder error 3 Motor slack of more than ¼ revolution appeared. Recalibrate the gauge.
0601 Force transducer error 1 Frequency of the force transducer is too low
0602 Force transducer error 2 Frequency of the force transducer is too high
0605 No wire tension A wire rupture was detected or the motor unit has not been unlocked, or the
force transducer is defective.
0607 Servo Auto Test failed for Make sure that the mechanical moving parts of the gauge can move as
3 consecutive attempts intended.
0610 Wire tension too low The wire tension has been too low for a while. Solve the problem or adjust item
ML.
0611 Wire tension too high The wire tension gas been too high for a while. Solve the problem; clean the
displacer.
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