Hardware reference guide

I/O Modules
614
35013379 02 October 2007
140DDI35310 Quantum I/O DC Input 24 Vdc Source 4x8 Input Module
Overview The 24 Vdc Source 4x8 Input module accepts 24 Vdc inputs and is for use with
shared input common wired to 0 V.
Specifications The following table shows the specifications for the DDI35310 24 VDC IN SOURCE
module.
Specifications
Number of Input Points 32 input points in four 8 point groups
LEDs Active
1 ... 32 (Green) - Indicates point status
Required Addressing 2 words in
Voltage
ON (Voltage) -15 ... -30 Vdc (reference from group supply)
OFF (Voltage) 0 ... -5 Vdc (reference group supply)
ON (Current) 2 mA min; 14 mA max
OFF (Current) 0.5 mA max
Absolute Maximum Input
Continuous 30 Vdc
1.0 ms 50 Vdc decaying pulse
Response (Resistive Loads)
OFF - ON 1 ms (max)
ON - OFF 1 ms (max)
Fault Detection None
Isolation
Group to Group 500 Vac rms for 1 minute
Input to Bus 1780 Vac rms for 1 minute
Internal Resistance 2.4 k
Input Protection Resistor limited
Bus Current Required 330 mA max
Power Dissipation 1.5 W + 0.26 W x the number of points ON
External Power 19.2 ... 30 Vdc
Fusing
Internal None
External User discretion
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