Seneca Z-8AI User manual

MI00362-4-EN INSTALLATION MANUAL 1/4
INSTALLATION MANUAL
SENECA s.r.l.; Via Austria, 26 – 35127 – PADOVA – ITALY; Tel. [phone] - Fax [phone]
Z-8AI
DOCUMENTATION
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 manual are not followed.
WARNING: The full content of this manual must be read before any operation.
The module must only be used by qualied electricians.
Specic documentation is available using the QR-CODE shown on page 1.
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 electrostatic discharges. Take appropriate measures during any operation.
CONTACT INFORMATION
Technical support [email protected] Product information [email protected]
This document is the 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 modied or supplemented for technical and/or sales purposes.
Z-8AI

MI00362-4-EN INSTALLATION MANUAL 2/4
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
LED STATUS LED meaning
PWR Green ON The device is powered correctly
FAIL yellow Flashing 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
CERTIFICATIONS
https://www.seneca.it/products/z-8ai/doc/CE_declaration
Note UL: use in environments with pollution degree 2 or lower. The power supply unit must be class 2.
INSULATION
ENVIRONMENTAL
CONDITIONS
Temperature: -20 ÷ + 65°C (-10 ÷ +55 °C UL)
Humidity: 30% ÷ 90% non condensing.
Altitude: up to 2000m above sea level
Storage temperature: -20 ÷ + 85°C
Protection degree: IP20.
ASSEMBLY 35mm DIN rail IEC EN60715 in vertical position.
CONNECTIONS
3-way removable screw terminals, pitch 5mm
Rear connector IDC10 for DIN bar 46277
front micro USB
POWER SUPPLY Voltage: 10 ÷ 40Vdc; 19 ÷ 28Vac; 50 ÷ 60Hz; Absorption: Max. 3.5W
Power
Supply
Analog
Input
Comm.
1500 V~
mA / V
mA / V
mA / V
mA / V
mA / V
mA / V
mA / V
mA / V
RS485
WARNING
the maximum working voltage between
any terminal and ground must be less than
50Vac / 75Vdc
TECHNICAL SPECIFICATIONS

MI00362-4-EN INSTALLATION MANUAL 3/4
INPUTS
Voltage input:Bipolar with F.S. programmable at +2Vdc and +10Vdc Input impedance >100kOhm
Current input:Bipolar with F.S. Programmable at +20mA with 50Ohm internal shunt selectable via DIP-
switch. Available power supply: 90 + 90mA at 13Vdc.
Number of chan-
nels: 8
Input resolution: 15 bit + sign.
Input protection: ± 30Vdc or 25mA
Precision
voltage and
current:
Starting: 0.1 of full scale
Linearity : 0.03% of scale.
Zero: 0.05% of scale.
TC: 100 ppm, EMI: <1 %
Sampling time 120 ms/channel or 60 ms/channel
CONFIGURATION OF FACTORY SETTINGS
All DIP-switches in OFF position
Communication parameters of ModBUS protocol: 38400 8, N, 1 Address 1
Communication parameters of micro USB front port 2400 8, N, 1 Address 1
Channel input from 1 to 8: VOLTAGE ± 10Vdc
Numerical representation of the input measurement: ± 10000mV
Sampling time: 120ms
Note: When DIP switches 1 to 8 are OFF, the communication settings are taken from programming (EEPROM).
Note 2: The RS485 line must be terminated only at the ends of the communication line.
SETTING THE DIP-SWITCHES
The position of the DIP-switches denes 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
SW1 POSITION BAUD
RATE
SW1 POSITION ADDRESS POSITION TERMINATOR
1 2 3 4 5 6 7 8 3 4 5 6 7 8 10
9600 #1 Disabled
19200 #2 Enabled
38400 #...
57600 #63
From
EEPROM
From
EEPROM
LEGEND
ON
OFF
SW2 INGRESSI ANALOGICI
12345678 CHANNEL
CURRENT INPUT
VOLTAGE INPUT
The settings of the dip-switches must be compatible with the settings on the registers. The description of the registers is
available in the USER MANUAL.

MI00362-4-EN INSTALLATION MANUAL 4/4
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.
INPUTS
A) Voltage input with sensor supply from the MODULE (13 Vdc)
B) Voltage input with sensor supply NOT coming from the MODULE
C) Current input with sensor supply NOT coming from the MODULE
D) Current input with sensor supply from the MODULE (13 Vdc)
E) Current input with sensor EXTERNAL power supply
#I 7n
#I 5n
#I 6n
#I 8n
#I 2n
#I 4n
#I 3n
gnd
#I 1n
gnd
++++
TX
TX
TX
TX
vext
TX
TX
TX
TX
+
ABCD E
S
S
S
S
+
+++
TX
TX
TX
TX
vext
TX
TX
TX
TX
+
S
S
S
S
vaux*
vaux
vaux
vaux
vaux
vaux*( generata dal modulo ) = 13 Vdc
vaux*
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...).
• install a fuse with a MAX capacity of 2.5A near the module.
• make sure that the power supply voltage to the module does not exceed: 40Vdc or 28Vac, otherwise the mod-
ule will be damaged.
ATTENTION