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2   SYSTEM CONFIGURATION 
 
POINTS 
 
(1)   The Q63P is dedicated for inputting a voltage of 24VDC. 
Do not input a voltage of except 24VDC into it or trouble may occur on the 
Q63P. 
(2)   Ensure that the earth terminals LG and FG are grounded. 
(Ground resistance : 
100 
 or loss) 
Since the LG terminal has a half of the input voltage, touching this terminal may 
result in an electric shock. 
(3)   When the Q61P, Q62P, Q63P or Q64PN is loaded on the extension base unit, 
a system error cannot be detected by the 
 
ERR  terminal. 
(The 
 
ERR  terminal is always OFF.)