Seneca Z-3AO User manual
INSTALLATION MANUAL
Z-3AO
Module with 3 x 12 bit analogue outputs with Modbus
protocol on RS485
SENECA s.r.l.
Via Austria, 26 – 35127 – PADOVA – ITALY
Tel. +39.049.8705355 - 8705359 - Fax +39.049.8706287
For manuals in other languages and the conguration software, visit www.seneca.it/products/z-3ao
MI000759-E 1/8
E
MODULE LAYOUT
Dimensions LxHxD 17.5 x 102.5 x 111 mm; Weight: 110 g; Enclosure: PA6, black
17.5 mm 111 mm
102.5 mm
PRELIMINARY WARNINGS
The word WARNING preceded by the symbol indicates conditions or actions that put the user's safety at
risk. The word ATTENTION preceded by the symbol indicates conditions or actions that might damage the
instrument or the connected equipment.
The warranty shall become null and void in the event of improper use or tampering with the module or devices
supplied by the manufacturer as necessary for its correct operation, and if the instructions contained in this manu-
al are not followed.
WARNING: The full content of this manual must be read before any operation. The module must only be used by
qualied electricians. Specic documentation is available at www.seneca.it/products/z-3ao
Important: Obstructing ventilation slots with any object is prohibited.
Installing the module next to devices that generate heat is prohibited.
Electrical and electronic waste disposal (applicable in the European Union and other countries with recycling). The
symbol on the product or its packaging shows the product must be surrendered to a collection centre authorized to
recycle electrical and electronic waste.
The module must be repaired and damaged parts replaced by the Manufacturer. The product is sensitive to electro-
static discharges. Take appropriate measures during any operation.
LED STATUS LED meaning
PWR Green ON The device is powered correctly
FAIL yellow Flashing Wrong setup
FAIL yellow ON Anomaly or fault
RX Red Flashing Receipt of packet completed
RX Red ON Anomaly / Check connection
TX Red Flashing Transmission of packet completed
SIGNALS VIA LED ON FRONT PANEL
2/8
TECHNICAL SPECIFICATIONS
STANDARDS
EN61000-6-4 Electromagnetic emissions, industrial environment.
EN61000-6-2 Electromagnetic immunity, industrial environment.
EN61010-1 Safety
Note for UL: use in environments with pollution degree 2. The power supply unit must be
class 2. Install a fuse with a MAX capacity of 2.5 A near the module.
INSULATION
ENVIRONMEN-
TAL
CONDITIONS
Temperature: -20 – + 65°C (-10 - +60 °C UL)
Humidity: 30%– 90% non condensing.
Altitude: up to 2000 m above sea level
Storage temperature: -20 + 85°
Protection degree: IP20.
ASSEMBLY 35 mm DIN rail IEC EN60715 in vertical position.
CONNECTIONS
3-way removable screw terminals, pitch 5 mm
Rear connector IDC10 for DIN bar 46277
front micro USB
POWER SUPPLY Voltage: 10 – 40 Vdc; 19 – 28 Vac 50 – 60 Hz
Absorption: Typical: 1,5 W @ 24Vdc, Max: 3.2 W
OUTPUTS
Voltage outputs:
-10 - 10 V, 0 - 10 V, 2 - 10 V. Pilotable impedance > 600 Ohm
Current outputs: 0 – 20 m, 4 – 20 mA. Pilotable impedance < 600 Ohm
Number of channels: 3
Voltage output resolution: 12 bit (5 mV)
Current output resolution: 12 bit (5 µA)
Voltage output errors: Calibration: 0.2% of F.S. MAX, 0.1% typical
Linearity : 0.05% of F.S.
Thermal stability: 0.01%/°C of F.S.
Voltage output errors: Calibration: 0.2% of F.S. MAX, 0.1% typical
Linearity : 0.05% of F.S.
Thermal stability: 0.01%/°C of F.S.
Response time: 50 ms
Power
Supply
Comm.
Output
1500 Vac
RS485 mA / V
mA / V
mA / V
CONFIGURATION OF FACTORY SETTINGS
All DIP-switches in OFF position
Communication parameters of ModBUS protocol: 38400 8, N, 1 Address 1
Channel 1 output: CURRENT 4 - 20 mA
Channel 2 output: CURRENT 4 - 20 mA
Channel 3 output: CURRENT 4 - 20 mA
Time Out: DISABLED
3/8
WARNING
the maximum working voltage between any
terminal and ground must be less than 50
Vac / 75Vdc
ModBUS CONNECTION RULES
1) Install the modules in the DIN rail (120 max)
2) Connect the remote modules using cables of an appropriate length. The following table shows cable length data:
- Bus length: maximum length of the Modbus network according to the Baud Rate. This is the length of the cables
that connect the two farthest modules (see Diagram 1).
- Derivation length: maximum length of a derivation 2 m (see Diagram 1).
For maximum performance, it is recommended to use special shielded cables, such as BELDEN 9841.
INSTALLATION REGULATIONS
The module has been designed for vertical installation on a DIN 46277 rail. For optimal operation and long life,
adequate ventilation must be provided. Avoid positioning ducting or other objects that obstruct the ventilation slots.
Avoid mounting modules over equipment generating heat. Installation in the bottom part of the switchboard is rec-
ommended.
Insertion in the DIN rail
As shown in gure:
1. Insert the IDC10 rear connector of the module on a
free slot of the DIN rail
(the insertion is univocal since the connectors are
polarized).
2. To secure the module to the DIN rail, tighten the two
hooks on the side of the IDC10 rear connector.
USB PORT
The module is designed to arrange data according to the modes dened by the MODBUS protocol. It has a micro
USB connector on the front panel and can be congured using applications and/or software programs. The USB
communication has priority over the RS485 communication.
The USB serial port uses the following communication parameters: 2400,8,N,1The USB communication port
responds exactly like the RS485 port with the exception of the communication parameters. During the use of the
USB port, the bus will be inactive; it will reactivate automatically a few seconds after the last message exchanged
on the USB port. EASY SETUP is the software to use for the conguration. For more information, visit www.sene-
ca.it/products/z-3ao
Check that the device in question is included in the list of products supported by the Easy Setup APP in the store.
4/8
1200 m 2 m
21
4
5
Ld
Diagram 1
Bus length Derivation
length
Module Module
Module
Module
Module 3
Bus length
Ld= derivation length
Insertion on
the DIN rail MODULE
DIN rail
CU MICROO TG-A-- CU MICROB-A-
CU MICROB-A-
Android APP
conguration
PC software
conguration
SETTING THE DIP-SWITCHES
The position of the DIP-switches denes the Modbus communication parameters of the module: Address and
Baud Rate The following table shows the Baud Rate and Address values according to the
DIP-switch
setting:
DIP-Switch status
SW2 POSITION BAUD
RATE
SW2 POSITION ADDRESS POSITION TERMINATOR
1 2 3 4 5 6 7 8 3 4 5 6 7 8 SW3
9600 #1 Disabled
19200 #2 Enabled
38400 #...
57600 #63
From
EEPROM
From
EEPROM
Note: When DIP switches 3 to 8 are OFF, the communication settings are taken
from programming (EEPROM).
RS485 line terminator
1 ON SW3
TERMINATOR
0 OFF
The R S 485 line must be terminated only at the ends
of the communication line.
SW1 ANALOGUE OUTPUTS
Current output ON
Channel
1
Channel
2
Channel
2Voltage output OFF
On one side of the module there are three selector
switches, which allow you to independently choose the
voltage or current output for each channel. This output
(either voltage or current) is automatically recognized
by the module.
It is advisable to set the DIP-switches with the
module off.
ANALOGUE OUTPUTS
Modbus registers: Holding registers
Register Name Description
40005 OUT CH1 Value of the analogue output: the accepted values are:
from 0 to 10000 current output 0 - 20 mA, 4 - 20 mA or
from -10000 to 10000 voltage output 0 – 10V, 2 – .10V, -10 – 10V depending on the
status of the ags of the EPRFLG register.
The value memorised in EEPROM will be used as a default value when the unit
is switched on and at the end of the timeout if the safety function is enabled (see
USER MANUAL).
40006 OUT CH2 As above
40007 OUT CH3 As above
5/8
ELECTRICAL CONNECTIONS
Power supply and Modbus interface are available using the Seneca DIN rail bus, via the IDC10 rear connector, or
the Z-PC-DINAL-17.5 accessory.
RS485GND
RS485A
RS485B
Power Supply AC / +
Power Supply AC / -
IDC 10
1
Back connector (IDC 10)
The illustration shows the meanings of the various
IDC10 connector pins if signals are to be sent via
them directly.
Power Supply AC
Ground
Power Supply AC
GNDSHLDG ND
CANL / BCANL / A
DIP SWITCH
(1230 Ohm terminator)
Z-PC-DINAL2-17.5 accessory use
If the Z-PC-DINAL2-17.5 accessory is used, signals
can be sent via terminal boards. The illustration
shows the meaning of the various terminals and DIP-
switch position (found in all supports for the DIN rail
listed in Accessories) for the termination of the CAN
network (not used for the Modbus network).
GNDSHLD:
Connection cable signal protection shield (recom-
mended).
Voltage Current
10
11
12
7
8
9
#OUT 1
V#OUT 2
#OUT 3
GN D
V
V
mA
+
+
+
mA
mA
Analogue outputs
Terminals 10, 11 and 12 are connected internally. The
outputs are available to terminals 7, 8 and 9 and can
be set as current or voltage via DIP-switches.
2
3
-Vac/Vdc
+ Vac/Vdc
1
Power supply
Terminals 2 and 3 can be used to provide the module with power supply as an al-
ternative to the connection using the Z-PC-DINx bus. 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 2.5 max permissible
value must be installed in the power supply line. A.
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.
N.B. The indication of the RS485 connection polarity is not standardised and in
some devices may be inverted.
ATTENTION
The upper power supply limits must not be exceeded, as this might cause serious damage to the module. Switch
the module off 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 (inverters, motors, induction ovens,
etc...).
• Make sure that the power supply voltage to the module does not exceed: 40 Vdc or 28 Vac, otherwise the
module will be damaged.
6/8
ADVANCED SETTINGS
• Possibility to set IS (the scale start) and FS (the full scale) of the desired output.
• Possibility to set a safety timer which, after a programmed time, brings the outputs to a predened safety
status.
• Possibility to set the security status of the outputs, this will be activated in the event of a communication failure
for a time equal to that set in the safety timer.
7/8
ACCESSORIES
CODE DESCRIPTION
CU-A-MICROB USM - micro USB 1 metre communication cable
CU-A-MICRO-OTG Mobile phone adapter cable
Z-PC-DINAL2-17.5 Quick t support for DIN rail - HEAD + 2 SLOT P = 17.5 mm
Z-PC-DIN2-17.5 Quick t support for DIN rail - 2 SLOT P = 17.5 mm
Z-PC-DIN8-17.5 Quick t support for DIN rail - 8 SLOT P = 17.5 mm
CONTACT INFORMATION
This document is property of SENECA srl. Copies and reproduction are prohibited unless authorised. The content of
this document corresponds to the described products and technologies.
Stated data may be modied or supplemented for technical and/or sales purposes.
8/8
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