Ascon Tecnologic - KM2 Line - ENGINEERING MANUAL - PAG. 3
2.4 Outputs
Safety notes:
–
To avoid electrical shocks, connect power line at last.
–
For supply connections use No. 16 AWG or larger wires
rated for at least 75°C.
–
Use copper conductors only.
–
SSR outputs are not isolated. A reinforced isolation must
be assured by the external solid state relays.
–
For SSR, mA and V outputs, when the line length is longer
than 30 m we suggest to use a shielded wire.
m
Before connecting the output actuators
,
we recommend to configure the parameters to suit
your application (e.g.: input type, Control strategy,
alarms, etc.).
2.4.1 Output 1 (OP1)
Relay Output
C
NO
7
8
Contact rating:
• 4 A /250 V cos
j
=1,
• 2 A /250 V cos
j
=0.4.
Operation:
1 x 10
5
.
SSR Output
SSR
+
-
7
8
Logic level 0:
Vout < 0.5 VDC;
Logic level 1:
12 V ±20%, 15 mA max..
Current Analogue Output
mA
+
-
7
8
mA output:
0/4... 20 mA, galvanically isolated, RL max. 600
Ω
.
Voltage Analogue Output
V
+
-
7
8
V output:
0/2... 10 V, galvanically isolated, RL min.: 500
Ω
.
2.4.2 Output 2 (OP2)
Relay Output
C
NO
13
14
Contact rating:
• 2 A /250 V cos
j
= 1;
• 1 A /250 V cos
j
= 0.4.
Operation:
1 x 10
5
.
SSR Output
SSR
-
+
13
14
Logic level 0:
Vout < 0.5 VDC;
Logic level 1:
12 V ±20%, 15 mA max..
2.4.3 Output 3 (OP3)
SSR Output
SSR
+
-
4
Out3
4
16
Logic level 0:
Vout < 0.5 VDC;
Logic level 1:
12 V ±20%, 20 mA max..
Note:
Overload protected.
2.5 Serial Interface
D +
D -
D +
D -
D +
D -
D +
D -
RS-485
5
6
Interface type:
Isolated (50 V) RS-485;
Voltage levels:
According to EIA standard;
Protocol type:
MODBUS RTU;
Byte format:
8 bit with no parity;
Stop bit:
1 (one);
Baud rate:
Programmable between 1200... 38400 baud;
Address:
Programmable between 1... 255.
Notes: 1.
RS-485 interface allows to connect up to 30
devices with one remote master unit.
2.
The cable length must not exceed 1.5 km at
9600 baud.
