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SECTION 3: WIRING AND INSTALLATION DS2100 User's Manual (Preliminary)
PAGE 3-59
Note that:-
§ Input Impedance > 5k W.
§ Voltage Range is 12V to 32V from Digital-Input to the I_COMMON line. Inputs are protected for input voltages
from –40V to +40V
§ Input voltages whose magnitude is less than 12V with respect to the I_COMMON line will not be
guaranteed to be recognised as an active signal input.
§ Input voltages whose magnitude is more than 5V with respect to the I_COMMON line will not be
guaranteed to be recognised as an inactive signal input
§ All digital inputs are optically isolated for noise immunity purposes. All DS2100 digital inputs are isolated from
high voltage circuitry internally
§ Current flowing in the digital input implies the 'safer' of the corresponding active/inactive functions. For
example, when current flows in the clockwise limit switch input, then the limit is NOT active.