2
Service and Maintenance
Checking the Fuse
Table 2-2 Fuse displayed readings
Current input terminal
54
Fuse Part number
1
2110-1400
440 mA/1000 V
2
2110-1402
11 A/1000 V
Fuse rating
Fuse healthy
≈102 Ω
≈0.05 Ω
Displayed readings
Replace fuse
OL
OL
U1270 Series Service Guide