K-Patents PR-01-S User Manual

Page 34

INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS)

DOCUMENT/REVISION No. INM 1/14

Effective: May 15, 2009

3.8. FUSES

Fuses printed on circuit board PR-7030:

Fuse F1, F2: 5 x 20 mm, T1A (slow)

AC Main power protects electronics against wrong
primary voltage

Fuse F3: 5 x 20 mm, T63 mA (slow)

4-20 mA output protection

Fuse F4: 5 x 20 mm, T2A (slow)

Secondary main fuse

Fuse F5: 5 x 20 mm, T500 mA (slow)

Sensor power protection

Fuse F6: 5 x 20 mm, T500 mA (slow)

Serial bus protection

Fuse F7: 5 x 20 mm, T1A (slow)

Processor card protection

Note. For a CSA-Certified instrument use only CSA-Certified fuses F1, F2, F4-F7.

Fuses for +24 V DC main power

Fuses printed on circuit board PR-7030 when IT-R has +24V DC input voltage

Fuse F1, F2: 5 x 20 mm, T2A (slow)

DC Main power protects electronics against wrong
primary voltage