Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 287)

Publication 1753-UM001C-EN-P - March 2010 287
Specifications Appendix A
Digital Outputs
Number of outputs 8 (not electrically isolated)
Output voltage range
≥
L+ minus 2V
Output current Channels 1…3 and 5…7: 0.5 A @ 60 °C (140 °F)
Channels 4 and 8: 1 A @ 60 °C (140 °F); 2 A @ 50 °C (122 °C)
Surge current per
channel 1 A for 10 ms @ 1 Hz (Channels 1…3 and 5…7)
4 A for 10 ms @ 1 Hz (Channels 4 and 8)
Current load, min 2 mA per channel
Internal voltage drop,
max 2.0V DC @ 2 A
Off-state leakage
current, max 1 mA @ 2V
Total output current,
max 7 A
Counters
Number of counters 2 (not electrically isolated)
Inputs 3 per counter (A, B, Z)
Input voltages 5V and 24V DC
High signal (5V DC): 4V…6V
High signal (24V DC): 13V…33V
Low signal (5V DC): 0V…0.5V
Low signal (24V DC): -3V…5V
Input currents 1.4 mA @ 5V DC
6.5 mA @ 24V DC
Input impedance 3.7 k
Ω
Counter resolution 24-bit
Input frequency, max 100 kHz
Triggered on negative edge
Edge steepness 1 V/
μ
s
Pulse duty factor 1:1
Analog Inputs
Number of inputs 8 (unipolar, not electrically isolated)
External shunt
(for current
measurement) 500
Ω
for 0…20 mA
Input values related to
L- Nominal Value: 0…10V DC or 0… 20 mA with 500
Ω
shunt
Service Value: -0.1…11.5V DC or -0.4…23 mA with 500
Ω
shunt
Input impedance 1 M
Ω
Internal resistance of
the signal source
≤
500
Ω
Overvoltage protection +15V, -4V
Resolution (A/D
converter) 12-bit
Accuracy 0.1% @ 25 °C (77 °F)
0.5% @ 60 °C (140 °F)
Attribute 1753-L32BBBM-8A and 1753-L32BBBP-8A