Pilz PSS SB TESTER D - Manual (Page 20)

Tests/Measurements
5-2 Operating Manual: PSS SB TESTER
Connection test
The connection test comprises the following separate tests:
• Measuring the resistance between CAN_H and CAN_L
• Test for short circuit between CAN_H and Vcc
• Test for short circuit between CAN_L and Vcc
• Test for short circuit between CAN_H and CAN_GND
• Test for short circuit between CAN_L and CAN_GND
• Test for short circuit between CAN_H and CAN_SHLD
• Test for short circuit between CAN_L and CAN_SHLD
The connection test corresponds to a resistance measurement.
The tester also detects components between the cables that are not
resistors (diodes, capacitors, ...).
Where resistance values are low (0 ... 1000 Ohm), the measuring accuracy
of the tester reaches the order of ± 5 %, if no capacitors or diodes are
found.
Performing the connection test
• Add the PSS SB TESTER at any point within SafetyBUS p.
• Switch on the PSS SB TESTER.
• Highlight the symbol in the “Start” window and press VAL.
• The “SafetyBUS p” window opens, in which you can select the test/
measurement. Use the arrow keys to move the cursor to the symbol for
“Connection test” and press VAL.
• The following question is displayed: “SafetyBUS p is switched off?”.
Make sure that SafetyBUS p is switched off, i.e. all devices on
SafetyBUS p must be switched off and there must be no voltage present
on the “Vcc” line.
Then press VAL.