Seneca Z-PC SERIES User manual

This document is property of SENECA srl. Duplication and reproduction are forbidden (though partial), if
not authorized. Contents of the present documentation refers to products and technologies described in
it. All technical data contained in the document may be modified without prior notice.
Content of this documentation is subject to periodical revision.
ITALIANO 1/8
MI000758-E
SENECA s.r.l.
Via Austria, 26 – 35127 – PADOVA – ITALY
Tel. [phone] - Fax [phone]
For manuals and configuration software please see: www.seneca.it
Installation
Manual
Contenuti:
- General specifications
- Technical specifications
- Modbus connection rules
- Installation rules
- Electrical connections
- DIP-switches settings
- Analog outputs
- Frontal panel LEDs signallings
- Default conditions
- Module layout
- Decommissioning and disposal
Installation
Manual
SENECA
S
Z-PC Line
Z-PC Line
Z-3AO
Z-3AO
3 analog outputs module with RS485
serial interface MODBUS RTU protocol
3 analog outputs module with RS485
serial interface MODBUS RTU protocol
EN
EN

ITALIANO 2/8
G SPECIFICATIONSENERAL
3 current or voltage analog outputs with 12 bit resolution.
Start/end scale voltage programmable between: -10 – +10 V, 0 – +10 V or +2 – +10 V.
Start/end scale current programmable between 0 – 20 mAo4–20mA
1500V insulation between: analog outputs and remaining low voltage circuits.
Outputs protection via 400W/ms TVS transient current suppressors;
PTC load protection.
Negative common connection.
.Removable terminals with section of 2.5 mm2
Fast response time (step 10-90%): < 50 ms.
Power supply and serial connection wiring facilitated by means of a bus that can be
housed in the DIN guide.
RS485 serial communication with Modbus-Rtu protocol, maximum 64 nodes.
RS232 on frontal pane for serialserial connection l with Modbus protocol
communications and also for programming.
Insertion and extraction from bus without interruption of communication or of system
power supply.
Communication times below 10 ms (@ 38400 Baud).
Connection distance up to 1200 m.
DIP-Switch settings for Module address and Baud rate.
T H AL SPECIFICATIONSEC NIC
Outputs
Voltage output
-10 – 10 V, 0 – 10 V, 2 – 10 V. Output impedance > 600 W
Current output
0 – 20 mA, 4 – 20 mA. Output impedance < 600 W
Number of output channels
3
Voltage output resolution
12 bit (5 mV)
Current output resolution
12 bit (5 µA)
Voltage output accuracy
Calibration Max: 0.2% of E.E.S., typical: 0.1% of E.E.S.
Linearity: 0.05% of Electical End Scale (E.E.S.)
Thermal stability: 0.01%/°C of E.E.S.
Current output accuracy
Calibration Max: 0.2% of E.E.S., typical: 0.1% of E.E.S.
Linearity: 0.05% of Electical End Scale (E.E.S.)
Thermal stability: 0.01%/°C of E.E.S.
Before executing any operation it’s mandatory to read all the content of this user Manual.
Only electrical-skilled technicians can use the module described in this user Manual.
No warranty is guaranteed in connection with faults resulting from improper use, from
modifications or repairs carried out by Manufacturer-unauthorised personnel on the module, or if
the content of this user Manual is not followed.
Only the Manufacturer is authorized to repair the module or to replace damaged components.

ITALIANO 3/8
Power supply
Supply voltage
10 – 40 Vdc;19 – 28 Vac 50 – 60 Hz
Power consumption
Typical: 1,5 W Vdc, Max: 3.2 W@ 24
Environmental Conditions
Temperature
-20 – +65°C (-10 – +55 °C UL)
Humidity
30 – 90% a 40°C not condensing
Altitude
Up to 2000 m. a.s.l.
Storage temperature
-20 – +85°C
Protection degree
IP20
Connections
Removable 3-way screw terminals, 5 mm pitch
Rear IDC10 connector for DIN 46277 rail
Frontal jack 3.5 mm
Dimensions / Box
Dimension
Width W = 100 mm, Height H = 112mm, Depth D = 17.5mm
Box
PBT, Black
7
8
9
23
456
Standards
The module complies with the following standards:
Isolation
1500 Vac
RS485
Analog
Outputs
1500Vac
IDC10
IDC10
EN61000-6-4 (electromagnetic emission,
industrial environment).
EN61000-6-2 (electromagnetic immunity,
industrial environment).
EN61010-1 (safety).
Power Supply
ADDITIONAL NOTES :
.Use in Pollution Degree 2 Environment
Power Supply must be Class 2.
A max 2.5 A rated fuse shall be installed near the module.

ITALIANO 4/8
Modbus connection rules
1) Install the modules on the DIN rail (max 120).
2) Connect the remote modules using cables of proper length. The following table show
the cables length
- Bus Length: Modbus network maximum length as a function of the Baud rate.
This is the lenght of the cables which connect the two bus terminators modules
(see Scheme 1).
- Derivation Length: Derivation line Maximum length as a function of the Baud Rate .
Bus lenght
Derivation lenght
1200 m
2 m
For the best performances, the use of special shielded cables is recommended
(BELDEN 9841 cable for example)
Scheme 1
Bus Length
DL = Derivation Length
DL
Module2
Module1
Module3
Module4
Module5
Installation Rules
The module is designed to be installed in vertical position on a DIN 46277 rail. In order to
ensure optimum performance and the longest working life, the module(s) must be supplied
adequate ventilation and no raceways or other objects that obstruct the ventilation slots.
Never install modules above sources of heat; we recommend installation in the lower part of
the control panel.
Inserting on the DIN rail
As it is illustrated in the next figure:
1) Insert the rear IDC10 connector on a DIN
rail free slot (there’s only one way to insert the
module because of polarized connector).
2) Tighten the two locks placed at the sides of
the rear IDC10 connector to fix the module.
Inserting on the
DIN rail
Module
DIN rail
Electrical Connections
Power supply and MODBUS interface
Power Supply and Modbus interface are available by using the bus for the Seneca DIN
rail, by the rear IDC10 connector or by Z-PC-DINAL2-17,5 accessory.

ITALIANO 5/8
Analog outputs
The screw terminals 10, 11 and 12 are
internally connected between
themselves.
The outputs available to the screw
terminals 7, 8 and 9 can be set for current
or voltage via DIP-switches.
Voltage Current
10
11
12
7
8
9
#OUT1
V
#OUT2
#OUT3
GND
V
V
mA
+
+
+
mA
mA
Power supply
Terminals 2 and 3 can be used to power supply the module as an
alternative to the Z-PC-DINx bus connection. The supply voltage must
be from 10 to 40 Vdc or from 19 to 28 Vac. The upper limits must not be
exceeded to avoid serious damage to the module. If the power
supply source is not protected against overload, a safety fuse
appropriately sized (Max = 2.5A) must be installed near the module.
2
3
19 – 28 Vac
50 – 60 Hz
10 – 40 Vdc
GND
B
A
4
5
6
MODBUS RS485
Connection for RS485 communication using the Modbus master
system as an alternative to the Z-PC-DINx bus.
Note: the indication of the RS485 connection polarity is not
standardised and in some masters may be inverted.
Z-PC-DINAL2-17,5 Accessory Use
If Z-PC-DINAL2-17.5 accessory is
used, the signals may be provided by
terminal blocks. The figure shows the
meaning and position of terminals and
the DIP-switch (present on each DIN rail
supports listed on Accessories) for
network termination (not used in case of
Modbus network).
GNDSHLD: Shield to protect the signals
of the connecting cables against
interference (recommended).
Rear Connector (IDC10)
In the figure the meaning of the IDC10
connector pins is showed, if the user
decides to provide the signals directly
through it.
R 485 GNDS
R 485 AS
RS485 B
Power Supply AC / +
Power Supply AC / -
IDC 10
1

ITALIANO 6/8
MODBUS RS232
The module is designed to exchange data according to the protocol MODBUS.
The RS232 communication has priority over the RS485 communication.
This RS232 serial port can be used for communication but also to program the module.
The RS232 serial port uses the following communication parameters: 2400,8,N,1
The RS232 COM port behaves exactly like that of the RS485 bus except for the
communication parameters. When using the RS232 bus will be idle, it will automatically
reactivate a few seconds after the last message on the COM port.
EASY SETUP is the configuration software for this module.
DIP-Switches settings
The DIP-switches position defines the module Modbus communication parameters:
address and Baud Rate.
In the following figure the Baud Rate and address values are listed as a function of the DIP-
switches position:
DIP-Switches status
SW1 POSITION
BAUD
RATE
SW1 POSITION
ADRESS
SW3
TERMINA
-TOR
12345678
12345678
POSITION
zz xxxxxx
9600
xxzzzzzy
# 1
z
Disabled
zy xxxxxx
19200
xxzzzzyz
# 2
y
Enabled
yz xxxxxx
38400
xx......
# . .
y
ON
yy xxxxxx
57600
xxyyyyyy
# 63
z
OFF
xxzzzzzz
From
EEPROM
xxzzzzzz
From
EEPROM
Note: when switches from 3 to 8 are in OFF, comunication settings are retrieved from
EEPROM
RS232 SERIAL PORT
The module is equipped with a female
Jack connector that allows the connection
to the RS232 communication bus.
The connection cable DB9 with a 3.5 mm
stereo Jack, can be assembled as
indicated in the following figure or it can be
bought as an accessory:(cod.PM001601).
1
GND Rx
Tx
Rx
6
Jack stereo 3.5 mm
Tx
9
GND
5
DB9-F

ITALIANO 7/8
RS485 line terminator
The RS485 line termination
must be carried out only at the
ends of the communication
line.
1
ON

SW3
TERMINATOR
0
OFF

Selection of the outputs type
On the side of the module
there are three switches,
which allow you to choose
independently for each
channel the output type.
This output (voltage or
current) is automatically
recognized by the module.
It is recommended to set
DIP-switch when module is
switched off.
SW1 ANALOG OUTPUTS
ON Current output
CHANNEL CHANNEL CHANNEL
123
OFF Voltage output
Analog outputs
MODBUS registers: Holding registers
Register
Name
Description
40005
OUT CH1
Analog output's value: the allowed values are:
from 0 to 10000 current output: 0 – 20 mA, 4 – 20 mA or else
from -10000 to 10000 voltage output: 0 – 10V, 2 – .10V, -10 – +10V
in relation to the state of the flags register EPRFLG.
The value stored in the EEPROM it will be used as the default
power-up and default timeout, only if the safety function is enabled
(please see USER MANUAL).
40006
OUT CH2
As above.
40007
OUT CH3
As above.
Advanced configurations
Facility to set SS (start scale ) and ES (end scale) of the desired output.
Facility to set a security timer that after a programmed time sets the outputs in a predefined
security status.
Facility to set the security status of the outputs, this will be activated when a communication
failure happens for a period equal to the setted time in safety timer.

ITALIANO 8/8
Default Conditions
Module factory settings parameters:
All DIP-Switches position:
OFFz
Communication parameters Modbus Protocol:
38400 8,N,1 Addr. 1
Output channel 1:
CURRENT 4 - 20 mA
Output channel 2:
CURRENT 4 - 20 mA
Output channel 3:
CURRENT 4 - 20 mA
Time out :
DISABLED
Frontal panel LEDs signallings
LED
STATUS
Meanings of LED
PWR Green
On
Power supply presence.
FAIL Yellow
Blinking
error settings.
FAIL Yellow
On
Malfunction or fault.
RX Red
Blinking
Receiving data from RS485.
RX Red
On
Verifying the connection.
TX Red
Blinking
Sending data to RS485.
TX Red
On
Verifying the connection.
Decommissioning and Disposal
Disposal of Electrical & Electronic Equipment (Applicable throughout the European Union and other European
countries with separate collections programs). This symbol, found on your producr or on its packaging, indicates
that this product should not be treated as household waste when you wish to dispose of it. Instead, it should be
handed over to an applicable collection point for the recycling of electrical & electronic equipment. By ensuring this
product is disposed of correctly, you will help prevent potential negative consequences to the environment and
human health, which could otherwise be caused by inappropriate disposal of this product. The recycling of
materials will help to conserve natural resources. For more detailed information about the recycling of the product,
please contact your local city office, waste disposal service of the retail store where you purchased this product.
Variation of standard parameters are possible by using configuration software (see: ).www.seneca.it
For more information about a list of all registers and their functions refer to the USER MAUNAL.
Module Layout
MODULE DIMENSIONS
FRONT PANEL
112 mm
17,5 mm
100,0 mm
Z-3AO
PWR
x
x
Y
ERR
x
x
RX
TX
COM