Ampcontrol ECD - Electrical Connections

Ampcontrol CSM Pty Ltd - ABN 35 000 770 141
ECD User Manual
Rev 3 – March 2020
ECDB005R0 13/03/2020 13:12 Page 12 of 21
4.2 Electrical Connections
Once the ECD relay has been mounted at a suitable location, it is necessary to wire it correctly.
Figure 3 shows a typical wiring diagram for the application of the ECD relay. Also refer to drawing ECDM003 for installation
information.
N.O. USER
PUSHBUTTON
RST
PILOT
IS EARTH
IS EARTH
IS EARTH
+
-
D.C. SUPPLY
USER
DEFINED
SAFE AREA
HAZARDOUS
AREA
SAFE AREA
OPTIONAL
STOP
DIODE
1000V, 1A
OPTIONAL
REMOTE
START
RESISTOR
100Ω
IS EARTH
BAR
MAIN EARTH
BAR
TERMINATION
EARTH BAR
Figure 3: ECD Typical Electrical Application
The table below lists the terminal connections into the ECD relay.
Terminal
Label
Description
1
RST
Reset
2
+
Power Supply Positive
3
-
Power Supply Negative
4
NC1
Relay Output Normally Closed Contact 1
5
NO1
Relay Output Normally Open Contact 1
6
COM1
Relay Output Common Contact 1
7
NO2
Relay Output Normally Open Contact 2
8
COM2
Relay Output Common Contact 2
9
NC
Not connected
10
NC
Not connected
11
NC
Not connected
12
NC
Not connected
13 Pilot
IS Pilot connection (protected by internal IS barrier) (Single core screened,
screen connected to earth at ECD end)
14
IS Earth
IS Earth
15
IS Earth
IS Earth
16
IS Earth
IS Earth
Using a screened cable helps in reducing the induced / coupled voltages. This noise
can cause spurious trips.