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A/D and D/A External Wiring
A/D: Active
A/D: Passive
V0+
I0+
VI0-
CH1
V3+
I3+
VI3-
CH3
0V
24V
FE
Voltage input
Current input
Shielded
cable
Shielded
cable
Terminal
power module
of
Grounding (100 or less)
+
-
U
I N
+
-
U
I N
1
2
3
4
4
5
V0+
I0+
V0-
CH1
V3+
I3+
VI3-
CH3
FE
Voltage input
Current input
Shielded
cable
Shielded
cable
Terminal of
power module
Grounding (100 or less)
-
+
U
IN
-
+
0V
24V
1
2
3
4
5
4
D/A
VO0
IO0
VO1
IO1
AG
CH1
Isolation wire
CH2
Voltage output
AC drive, recorder,
scale value...
AC drive, recorder,
scale value...
Current output
Isolation wire
6
7
4
4
8
8
Note: When the A/D module is
connected to current signals, make
sure to short-circuit “V+” and “I+”
terminals.
RS-485 Wiring
D+ D- SG
D+ D- SG
SG D+ D-
3
4
1
2
2
3
4
○
1
Client node
○
2
Server node
○
3
Terminal resistor
○
4
Shielded cable
Note: 1. Terminal resistors are suggested to be connected to the client node and the last server
node with resistor value of 120
.
2. To ensure communication quality, please apply double shielded twisted pair cable
(20AWG) for wiring.
3. When voltage drop occurs between the internal ground references of two
systems,
connect the systems with Signal Ground point (SG) for achieving equal potential
between systems so that a stable communication can be obtained.
Precision of the RTC (Second/Month)
Temperature
(°C/°F)
0/32 25/77 55/131
Maximum error
(Second)
-117 52 -132
Duration in which the RTC is latched: One week
Troubleshooting & Indicator Description
Based on the indicators on the front panel, please check the following for errors:
☼
POWER indicator
When ELC2 is powered, the POWER LED indicator on the front panel will be on
(in green). If this indicator is not on or the ERROR indicator keeps flashing when
ELC2 is powered indicates that the power 24V are insufficient or DC
power supply 24V is overloaded. In this case, change another 24V DC power
