Weidmuller ACT20X - Manual (Page 23)

Product Installation / Operation, ACT20X-HDI-SDO (NAMUR Pulse Isolator)
1066540000/01/12.11 23
7.1.3 Electrical Connections
Terminal Function Connector Terminal Function Connector
11 SW Sense 41 COM / / OPTO +
12 NAMUR  42 NO / NC / OPTO –
output
channel 1
13 SW Supply 43 COM / / OPTO +
14 NAMUR +
Ex input
channel 1
44 NO / NC / OPTO –
output
channel 2
21 SW Sense 51 GND
22 NAMUR  52 +24 V DC
power supply
23 SW Supply 53 NC
24 NAMUR +
Ex input
channel 2
54 COM
status relay
Table 7-2: Electrical Connections
7.1.4 Function Description
(1) NAMUR sensor with cable error detection in case of cable disconnection or short circuit.
(2) Mechanical switch with cable error detection in case of cable disconnection or short circuit, when series
resistance (R
S
) and parallel resistance (R
P
) are mounted on the switch.
(3) Mechanical switch with cable error detection in case of cable disconnection, when parallel resistance
(R
P
) is mounted on the switch.
(4) Mechanical switch without cable error detection.
See illustration 7-2 "Functional Block Diagram" for further information.
7.1.5 Specifications
Features
 Configuration and monitoring via FDT/DTM-Software "WI-Manager".
 Selection of direct or inverted function for each channel.
 The device can be mounted in the safe area and in Zone 2 / Division 2 and receive signals from Zone 0, 1,
2, 20, 21 and 22, as well as Class I/II/III, Division 1, Group A-G.
 Extended self diagnostic: Monitoring of error events and cable breakage via the individual status relay.
 LED indication for operation status and malfunction.
 3-way galvanic isolation between input, output and supply.