Ports; Inputs; Table 2 Resistor Networks; Table 3 Resistor Network And Channel Designators - Octagon Systems 5624 User Manual

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Ports

Inputs

The 5624 inputs are optically isolated and are capable of receiving
high voltage level inputs. If the input voltage level is below the
threshold level, a logic zero is read. If the input voltage is above the
threshold voltage, a logic one is read. The inputs require a minimum
of 1 mA at the threshold voltage in order to turn on. The input
thresholds are programmed by using DIP resistor packs. The resistor
value and the associated threshold are listed in Table 2.
Table 2 Resistor networks
Resistor network
value (ohms)
* default
Each DIP resistor pack affects four adjacent inputs. The DIP resistors
reference designators and the associated input channels are listed in
Table 3.
Table 3 Resistor network and channel designators
Reference designators
If your application requires a different input threshold than the
factory default, Table 4 lists the resistor packs recommended for
replacement at locations RN6, RN7, RN9 or RN10.
5624 resistors: RN6, RN7, RN9, and RN10
Typical
threshold
510 ohms *
1K ohms
4.7K ohms
10K ohms
5624 resistor designators
RN6
RN7
RN9
RN10
14
Maximum
allowed
(volts) (volts)
2.7 14
2.8 27
8.8 58
17 84
Input channels
0, 1, 2, 3
4, 5, 6, 7
8, 9, 10, 11
12, 13, 14, 15