Eaton ELCM Series, Руководство по эксплуатации

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E L C O p e r a t i o n M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003006E 1-16
3.1.2.3 Specification
„
Functions Specification
Digital/Analog module Voltage output Current output
Power supply voltage 24 V DC (20.4 ~ 28.8V DC) (-15% ~ +20%)
Analog output channel 2 channels or 4 channels/module
Range of analog output 0 ~ 10V 0 ~ 20mA
Range of digital data 0 ~ 4,000 0 ~ 4,000
Resolution 12 bits (1
LSB
= 2.5mV) 12 bits (1
LSB
= 5 μ A)
Output impedance 0.5 Ω or lower
Overall accuracy
±
0.5% when in full scale (25°C, 77°F);
±
1% when in full scale within the range of (0 ~ 55°C, 32 ~ 131°F)
Response time 3 ms × the number of channels
Max. output current 20mA (1K Ω ~ 2M Ω ) -
Tolerance load
impedance
- 0 ~ 500 Ω
Digital data format 11 significant bits out of 16 bits are available; in 2’s complement
Isolation
Internal circuit and analog output terminals are isolated by optical couplers.
There is no isolation between analog channels.
Protection
Voltage outputs are protected from short circuit. Short circuit lasting for too
long may cause damage on internal circuits. Current output can be open
circuit.
Communication mode
(RS-485)
ASCII/RTU mode.
Communication speed: 4,800/9,600/19,200/38,400/57,600/115,200 bps.
ASCII data format: 7-bit, Even, 1 stop bit (7, E, 1),
RTU data format: 8-bit, Even, 1 stop bit (8, E, 1).
RS-485 cannot be used when connected to ELC MPU in series.
When connected to
ELC in series
The modules are numbered from 0 to 7 by their position with respect to the
ELC controller. 0 is the closest to the controller and 7 is the furthest. A
maximum of 8 special modules are allowed per ELC controller and they do not
count against the number of digital I/O points allowed for each controller.
D/A conversion curve
(Default: mode 0)
Mode 0: (0V ~ +10V), Mode 1: (2V ~ +10V)
10V
+4, 000
0
OFFSET
6V
5V
2V
GAIN
+2, 000
Voltage
out put
Mode 1
Mode 0
Digita l input