7 INPUT / OUTPUT CONNECTIONS
7.1 ISOLATED DIGITAL INPUTS
Opto-isolated digital inputs (opto-inputs)
Compliance ESI 48-4
Rated nominal voltage 24 to 250 V dc
Operating range 19 to 265 V dc
Withstand 300 V dc
Recognition time with half-cycle ac
immunity filter r
emoved
< 2 ms
Recognition time with filter on < 12 ms
7.1.1 NOMINAL PICKUP AND RESET THRESHOLDS
Nominal battery
v
oltage
Logic levels: 60-80% DO/PU Logic Levels: 50-70% DO/PU
24/27 V Logic 0 < 16.2V, Logic 1 > 19.2V Logic 0 <12V, Logic 1 > 16.8V
30/34 Logic 0 < 20.4V, Logic 1 > 24V Logic 0 < 15V, Logic 1 > 21V
48/54 Logic 0 < 32.4V, Logic 1 > 38.4V Logic 0 < 24V, Logic 1 > 33.6V
110/125 Logic 0 < 75V, Logic 1 > 88V Logic 0 < 55.V, Logic 1 > 77V
220/250 Logic 0 < 150V, Logic 1 > 176V Logic 0 < 110V, Logic 1 > 154V
Note:
Filt
er is required to make the opto-inputs immune to induced AC voltages.
In addition to the above thresholds, some models of this product provide the following threshold levels for FSK
applications:
● For 220/250 v
oltage inputs: Logic 0 < 145V, Logic 1 > 165V
7.2 STANDARD OUTPUT CONTACTS
Compliance In accordance with IEC 60255-1:2009
Use General purpose relay outputs for signalling, tripping and alarming
Rated voltage 300 V
Maximum continuous current 10 A
Short duration withstand carry
30 A for 3 s
250 A for 30 ms
Make and break, dc resistive 50 W
Make and break, dc inductive 62.5 W (L/R = 50 ms)
Make and break, ac resistive 2500 VA resistive (cos phi = unity)
Make and break, ac inductive 2500 VA inductive (cos phi = 0.7)
Make and carry, dc resistive 30 A for 3 s, 10000 operations (subject to the above limits)
Make, carry and break, dc resistive 4 A for 1.5 s, 10000 operations (subject to the above limits)
Chapter 22 - Technical Specifications P54A/B/C/E
522 P54xMED-TM-EN-1
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