I/O Module Specifications 32 GFK-0123 5112 VDC TTL Input, Positive/Negative IC655MDL533 Logic, 64 Circuits This module provides 64 circuits for connection to user input devices. 32 LEDs on the module indicate the status of the 32 Inputs associated with one connector. A toggle switch above the top (Jl) connector allows the user to choose the group of inputs being monitored (A to D, or E to H). The top 16 LEDs perform a dual function. They normally provide a visual indication of the status of each input circuit with each LED reflecting the ON or OFF state of the corresponding circuit. Second, when commanded through programming, they indicate the starting I/O address for the module. Field wiring connections from input devices is made to two 37-pin subminiature D-type connectors (labeled Jl (A-D) and 52 (E-H)), mounted on the front of the module. One connector is used for two groups with 16 inputs in each group. The four groups are labeled A and B (group l), C and D (group 2), E and F (group 3), and group 4 is G and H. The pins in each group are labeled 1 to 8, for example: group 1 is Al to A8 and Bl to B8. Each group has a common connection, labeled C. The user must supply the source of 5 to 12 VDC power to reflect the state of the inputs to the module. All groups can be powered from a common source or from different sources. The circuits can operate as either positive or negative logic, depending on how the source voltage is connected to the module. Table 16. Specifications for 5/12 VDC Input, Positive/Negative Logic - 64 Circuits Input Circuit Type Number of Circuits Internal Circuit Grouping Operating Voltage Maximum Voltage (open circuit) Input Current ON Level OFF Level Maximum OFF Leakage Minimum ON Current OFF to ON Response ON to OFF Response Status Indicator Location Internal Power Consumption (5 VIE) Positive/Negative Logic (selectable by wiring) Weight 39 oz (600 g) 64 Four groups, 16 circuits per group 4.75 to 13.2 VDC 15 VIX 2.5 mA at 5 V, 7.5 mA at 12 V 4.0 VDC; between C and Input terminal 2.0 VDC; between C and Input terminal 0.8 mA 1.8 mA 1 to 4 ms 1 to 4 ms Logic side Total; 136 mA (typical), 180 mA (maximum) 50 mA + 0.1 mA per On point + 2.5 mA per On LED NUMBER 48 OF CIRCUITS ON 32 32 CIRCUITS ON 10%20%3CPC40%50%60% AMBIENT TEMPERATURE (“C) Figure 25. Input Points vs. Temperature for IC655MDL533 I/O Module Specifications 33 GFK-0123 TTL Compatibility The following information is a guide to the TTL compatibility of this module. Compatibility is dependent on how the power for the TTL outputs is connected to the module. Examples of the two possible conditions are shown below; one with the common connected to +5V,and the other with the common connected to ground. NOTE In order for the TTL circuits on this module to work correctly, the user must ensure that the external power supply is the same supply that is driving the TTL outputs. Example 1: Common connection of module tied to +5V. An example of this conection is shown below. EXTERNAL POWER SUPPLY I I I 1 I a43330 MODULE CIRCUITRY -ii&i FIELD DEVICE If connected to a +5 VDC supply which is also used to power the external TTL outputs, and the open collector or bipolar ‘ITL outputs are tied to the Common terminal, then this module is compatible with the following logic families: l Standard TTL outputs l 74LS TTL series outputs l l l 74s TTL series outputs CMOS HC series outputs 4049 and 4050 CMOS outputs (but not other 4000 series CMOS outputs) 34 I/O Module Specifications GFK-0123 Example 2: Common connection An examDle of this connection of module tied to ground. is shown below. EXTERNAL POWER SUPPLY rl ov +5v I 1 a43329 MODULE CIRCUITRY I I I I OUTPUT FROM FIELD DEVICE L COUPLER If connected to a +5 VDC supply which is also used to power the external TTL outputs, and the external TTL common is connected to the Common tetial on this module, then this module is compatible with the following logic families: Standard TTL outputs (with external 330 ohm pull-up resistor to +5 V) 74s series TTL outputs (with external 330 ohm pull-up resistor to +5 V) Standard 400 series CMOS outputs (with external 330 ohm pull-up resistor to +5 V) HC series CMOS (no pull-up resistor required) I/O Module Specifications 35 GFK-0123 Wiring Information The following - IC655MDL533 figure provides the information required for connecting FElD rnRMG TWMNAIS MODULE field devices to this module. CIRCUITRY EXAMPLE SHOWS EXTERNAL DEVICE SINKJNOCURRENT ---I+ OTHER 15 CIRCUITS EXAMPLE SHOWS UCTERNAL DEVICE SOURCINQ CURRENT EXAMPLE SHOWS EXTERNAL DEVICE SlNKlNO CURRENT :: XXMON OTHER +1sclRcurls - c92: EXAMPLE SHOWS EXTERNAL DEVICE SCURCINO CURRENT Figure 26. Field Wiring and Typical Circuit for IC655MDL533
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