ANALOGUE INPUTS
Voltage
Active sensor current
(4 wires)
Passive sensor current (2 wires)
(*) Not available without external power supply
The module has two
analogue inputs that
can be configured via
software as voltage
or current. For the
configuration software,
see the user manual.
5/6
ELECTRICAL CONNECTIONS
Power supply
Terminals 2 and 3 can be used to provide the module with power supply as an
alternative to the connection using the Z-PC-DINx bus.
The power supply voltage must remain in the range of either 19 and 40V DC (any
polarity), or 19 and 28V AC.
The upper limits must not be exceeded as this can seriously damage the module
.
If the power supply source is not protected against overload, a safety fuse with a 1 A
max permissible value must be installed in the power supply line.
Serial port 2: RS485 SW2 = OFF
Z-LTE has a serial port that can be set with the SW2 switch.
If switch SW2 is in the OFF position, the RS485 COM 2 port is available at terminals
10-11-12. The illustration shows how to complete connections.
N.B.: the indication of the RS485 connection polarity is not standardised and in some
devices may be inverted.
1
2
3
10
11
12
Serial port 2: RS232 SW2 = ON
Z-LTE has a serial port that can be set with the SW2 switch.
If switch SW2 is in the ON position, the RS232 COM 2 port is available at terminals
10-11-12.
The illustration shows how to complete connections.
The RS232 interface is fully settable.
10
11
12
GND
A (+)
B (-)
GND
RX
TX
Aux. volt.
Vac/Vdc
Vac/Vdc
CAUTION
On first start-up the module must be supplied without any interruptions for at least 72 hours to charge the internal
batteries. Switch the module off with the PS1 button before connecting inputs and outputs.
To meet the electromagnetic immunity requirements:
- use shielded signal cables;
- connect the shield to a preferential instrumentation earth system;
- separate shielded cables from other cables used for power installations (transformers, inverters, motors, etc...).
+
+
+
+
DIGITAL INPUTS
NPN with internal power
PNP with internal power
PNP with external power
