LC700 – User’s Guide
3.60
NOTE
To comply with the EMC standard, use shielded cables in signal inputs (ground the shield in the panel only
in one side of the cable) and cables less then 30 meters for power source inputs.
IMPORTANT
These modules have 12-bit counters to accumulate up to 4096 pulses, for each one of 16 channels, before a
overflow occurs. Therefore, considering the maximum operation frequency, they have the following minimum
overflow times:
• M-302: 4096 pulses / 10000 Hz = 0,4096 s ;
• M-303: 4096 pulses / 100 Hz = 40,96 s ;
The system macro-cycle must be lower than the pulse counter modules overflow times.
Technical Specifications
ARCHITECTURE
Number of inputs 16
Number of groups 2
Number of points per group 8
ISOLATION
Groups are isolated separately
optical isolation up to 5000 Vac
EXTERNAL SOURCE
Voltage Source 20-30 Vdc
Typical Consumption Per group 65 mA @24 Vdc
Power Supply Indicator Green LED
INTERNAL SOURCE
M-302 M-303/
Provided by the IMB bus(5 VDC) 90 mA 130 mA
Maximum total dissipation 0.425 W 0.650 W
Power Supply Indicator None None
INPUTS
ON State Level (True Logic) 0-5 Vdc; <200Ω (M-302/M-303)
OFF State Level (false Logic) 20-30 Vdc;>10 KΩ (M-302/M-303)
Typical Impedance
3.9 KΩ
Display status Yellow LED
Input current per point 7.5 mA (typical)
Maximum input frequency
M-302: 0-100 Hz
M-303: 0-10 KHz
DIMENSIONS AND WEIGHT
Dimensions (W x D x H)
39.9 x 137.0 x 141.5mm;
(1.57 x 5.39 x 5.57 in)
Weight 0.342 kg
CABLES
One Wire 14 AWG (2 mm
2
)
Two Wires 20 AWG (0.5 mm
2
)
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