Pixsys DRR244 - CT Input; Digital Inputs; Serial Input; Digital Output

User manual - DRR244 - 11
5.1.c CT input
CT
18
19
To enable CT input, modify parameter 287 ct F.
• Input for 50 mA amperometric transformer.
• Sampling time 100 ms.
• Configurable by parameters.
5.1.d Digital inputs
0V
DI2
(PNP)
18
DI1
(PNP)
17
+V
16
9
Digital inputs can be enabled by parameters.
Close pin
“DIx” on pin “+V” to enable digital input.
It is possible to put in parallel the digital inputs of different devices joining
togheter the 0V pins (9).
5.1.e Serial input
RS485
Shield/Schermo
(B)
(A)
21
20
Modbus RS485 communication.
RTU Slave with galvanic insulation.
It is recommended to use the twisted and shielded cable for communica-
tions.
5.1.f Digital output
0V
DO1
(PNP)
DO2
(PNP)
9
10
19
Digital output PNP (including SSR) for command or alarm.
Range 12 VDC/25 mA or 24 VDC/15mA selectable by parameter 282
v.out.
5.1.g Analogue output AO1
AO1
V/mA
12
11
Linear output in mA or V (galvanically isolated) configurable as command,
alarm or retransmission of process-setpoint.
The selection mA or Volt for the linear output depends on the parameters
configuration.
5.1.h Relays output Q1 - Q2
3
2
1
Q1
5A
230V
6
5
4
Q2
5A
230V
Capacity 5 A / 250 VAC for resistive loads.
See chart below.
50
20
10
5
0
1
2 3 4
Contact load current (A)
5
Service life (x10
4
operations)
100
AC125 V
AC125V COS ø=0.4
DC30 V t=7ms
Life Curve
AC250V COS ø=0.4
DC30 V t=15ms
200
AC250V
DC30 V
Electrical endurance Q1, Q2:
• 5A, 250 VAC, resistive loads, 10
5
operations.
• 20/2A, 250 VAC, cosφ = 0.3, 10
5
operations.