Ampcontrol MEC-1 - Electrical Connections and Components; Wiring Diagram and Terminals

Ampcontrol CSM Pty Ltd - ABN 35 000 770 141
ECDB006 MEC-1 User Manual
Rev 1 – MARCH/2020
MEC-1 USER MANUAL R0 13/03/2020 13:16 Page 10 of 18
4.2 Electrical Connections
Once the MEC-1 relay has been mounted at a suitable location, it is necessary to wire it correctly.
Figure 2 shows a typical wiring diagram for the application of the MEC-1 relay.
N.O. USER
PUSHBUTTON
RST
PILOT
EARTH
+
-
D.C. SUPPLY
USER
DEFINED
OPTIONAL
STOP
DIODE
1000V, 1A
OPTIONAL
REMOTE
START
RESISTOR
100Ω
MAIN
EARTH BAR
TERMINATION
EARTH BAR
Figure 2: MEC-1 Typical Electrical Application
The table below lists the terminal connections into the MEC-1 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
Pilot connection (Single core screened, screen connected to earth at MEC-1
end)
14
NC
Not connected
15
NC
Not connected
16
Earth
Earth
Using a screened cable helps in reducing the induced / coupled voltages. This noise
can cause spurious trips.