
ZEN-RIO
Relay I/O Expansion Unit
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› The perfect companion for the
ZEN-16 Control Station
› Adds 16 relay outputs and 16
digital control inputs
› Ideal for on/o control and alarm
or status control
General Description
ZEN-RIO is a relay output and digital
input expansion which is designed for
seamless integration with the ZEN-16
control and monitoring station.
The ZEN-RIO's relays are controlled
The digital control inputs are designed
for SCADA applications and can be read
directly from the ZEN-16's com ports.
Applications for the ZEN-RIO are nu-
merous, and include on/o control and
directly by the ZEN-16's setpoints, which
are in turn easily con gured using our
user-friendly and exible WorkBench
so ware (download it for free at
de neinstruments.com/workbench).
alarming functions.
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CONTENTS
Contents .......................................... 2
1 - Speci cations ............................. 2
2 - Unit Overview ........................... 3
2.1 - Casing & Terminals ............. 6
2.2 - LED Indicators ..................... 6
3 - Wiring & DIP Switches ............... 5
3.1 - Relays 1–16 ......................... 5
3.2 - Control Inputs 1–16 ............ 5
3.3 - Power .................................. 6
1
SPECIFICATIONS
4 - Connecting To Your ZEN-16 ....... 7
4.1 - Expansion Terminals ........... 7
4.2 - So ware Setup ................... 7
16 isolated relay outputs Change over Form C (10A 250V AC or 10A 30V DC), 1kHz
scan rate. So ware selectable relay state.
16 selectable digital control inputs Input type select NPN (sink) or PNP (source)
from DIP switch A4 (see 2.5). 1kHz Input sample rate. Input voltage 5–24V.
LED indication on each relay output and control input channel (see 2.1–2.2)
Communication Via iC bus, 400kHz
DC power supply 24V DC ±15%
DIN rail mountable unit 35mm DIN rail
Dimensions (H x W x D) 59 x 255 x 144mm (2.32 x 10.04 x 5.67") - with plugs in
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No user serviceable parts.
service personnel.
See instructions before
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UNIT OVERVIEW
2.1 - Casing & terminals
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A Relay output 1
B Relay output 2
C Relay output 3
D Relay output 4
E Relay output 5
F Relay output 6
G Relay output 7
H Relay output 8
2.2 - LED indicators
I Relay output 9
J Relay output 10
K Relay output 11
L Relay output 12
M Relay output 13
N Relay output 14
O Relay output 15
P Relay output 16
Q Control inputs 1–16
R Power (24V DC ±15%)
S Expansion in
T Expansion out
U DIP switches
PWR illuminates when power is connected to the unit.
BEAT will ash every second to show that the unit is operating.
TX shows communication responses from the ZEN-RIO to the ZEN-16.
RX shows communication requests from the ZEN-16 to the ZEN-RIO.
ASP shows that the setpoint mode has been con gured correctly. This LED should
always be lit when the unit is powered on.
Relay output LEDs show the active state of relays 1–16. When the LED is o , the
respective relay is de-energised, and when the LED is on, the respective relay is ener-
gised (see 3.1 for more information).
Control input LEDs show the active state of digital control inputs 1–16. If the LED
is on, the respective digital control input has been activated (see 3.2 for more
information).
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3
WIRING & DIP SWITCHES
3.1 - Relays 1–16 (see 2.1A–P)
The relay outputs are located along the upper
and lower le sides of the unit (see 2.1A–P),
and are wired as shown (right).
LED indicators
The Relay Outputs LED indi-
cators show the active state of each relay. If the LED is o , the respective relay is
de-energised and the COM terminal is connected to the NC terminal. If the LED
is on, the respective relay is energised and the COM terminal is switched to the
NC
COM
NO
16151413121110987654321
NO terminal.
3.2 - Control inputs 1–16 (see 2.1Q & 2.1U)
The digital control inputs are located on the lower right side of the
unit (see 2.1Q). The input type for control inputs 1–16 must be set
to either NPN or PNP using DIP switch 4 (see 2.1U).
Set switch 4 to the O position for NPN, or the On position for
PNP. (Note that the 16 digital control inputs must be either all NPN
or all PNP, but could combine di erent types of sensors.)
LED indicators
The Control Inputs LED indi-
On
O
NPN/PNP
Not Used
16151413121110987654321
cators show the active state of each digital control input. If the LED is on, the
respective input has been activated. The input LED will always indicate the acti-
vated state of the input, regardless of what type of input is being used.
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NPN (DIP switch 4: O )
All digital control inputs must be driven
from outputs which can sink current (i.e.
active low).
NPN
Digital Input 1−16
Open
collector
Common
output
PNP (DIP switch 4: On)
All digital control inputs must be driven
from outputs which can source current
(i.e. active high).
Switch
contacts
Pushbutton/
Relay
TTL
5V
0V
Switch
contacts
Pushbutton/
Relay
Digital Input 1−16
Common
Digital Input 1−16
Common
+ Supply (+5−+24V)
Digital Input 1−16
PNP
+ Supply (+5−+24V)
TTL
5V
Digital Input 1−16
Open
collector
output
Digital Input 1−16
0V
Common
3.3 - Power (see 2.1R)
The power terminal is located on the top side of the unit, in the far
right corner (see 2.1R). The ZEN-RIO accepts 24V DC supply (±15%).
−
+
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4
CONNECTING TO YOUR ZEN-16
4.1 - Expansion terminals (see 2.1S–T)
Connect your ZEN-RIO to
your ZEN-16 using the sup-
plied cable, as shown (right).
The lead should be connect-
ed from the Expansion Out
terminal on the ZEN-16 to
the Expansion In terminal
on the ZEN-RIO.
Expansion Out
ZEN-16
Expansion
In
CAUTION!
Risk of damage to equipment:
Never connect an expansion terminal on a ZEN-16 or
ZEN-RIO to an Ethernet port, network, or any other unapproved device.
The ZEN-16 and ZEN-RIO are connected using a standard
Cat5 patch lead, however the expansion terminals are NOT
standard Ethernet ports.
ZEN-RIO
4.2 - So ware setup
So ware setup of the ZEN-RIO is facilitated through our simple and exible De-
ne WorkBench so ware (de neinstruments.com/workbench), connected to the
ZEN-16.
Note that De ne WorkBench does not connect directly to your ZEN-RIO - it connects
to the ZEN-16, and all options relating to the ZEN-RIO are con gured from there.
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Relay Outputs 1-16
The ZEN-RIO's 16 relay outputs are controlled by the ZEN-16's 16 setpoints, and are
con gured from the Setpoints tab. The image below shows the setup page for Set-
point 1 in WorkBench. The output of Setpoint 1 is directly mapped to Relay 1 in the
ZEN-RIO, if connected.
ZEN-16 Mapped to ZEN-RIO
Setpoint 1 Relay 1
Setpoint 2 Relay 2
Setpoint 3 Relay 3
Setpoint 4 Relay 4
Setpoint 5 Relay 5
Setpoint 6 Relay 6
Setpoint 7 Relay 7
Setpoint 8 Relay 8
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ZEN-16 Mapped to ZEN-RIO
Setpoint 9 Relay 9
Setpoint 10 Relay 10
Setpoint 11 Relay 11
Setpoint 12 Relay 12
Setpoint 13 Relay 13
Setpoint 14 Relay 14
Setpoint 15 Relay 15
Setpoint 16 Relay 16

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Control Inputs 1-16
The 16 digital control inputs on the ZEN-RIO are intended for use with SCADA sys-
tems or various plugins supplied by De ne Instruments. Without a plugin they do
not have any associated control functions on their own.
The status of the 16 digital control inputs can be read from any of the ZEN-16's se-
rial ports when set to Modbus RTU slave mode (factory default). They can either be
read as a 16 bit value from the Modbus Input register #4103 (4102 for direct address-
ing), or as Modbus discrete status inputs from input #113 to 128 (112–127 for direct
addressing).
The table below shows the functions of various bit ags:
Control
Input #
Register
4103 Bit #
Discrete
Input #
CI_1 0 113
CI_2 1 114
CI_3 2 115
CI_4 3 116
CI_5 4 117
CI_6 5 118
CI_7 6 119
CI_8 7 120
Control
Input #
Register
4103 Bit #
Discrete
Input #
CI_9 8 121
CI_10 9 122
CI_11 10 123
CI_12 11 124
CI_13 12 125
CI_14 13 126
CI_15 14 127
CI_16 15 128
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ZEN-RIO-MAN-15V02 (1009) Copyright © 2015 De ne Instruments

De ne Instruments
New Zealand (Head O ce)
10B Vega Place, Rosedale,
Auckland 0632, New Zealand
PO Box 245 Westpark Village,
Auckland 0661, New Zealand
Ph: +64 (9) 835-1550 | Aus: 1800 810-820
Fax: +64 (9) 835-1250
sales@de neinstruments.co.nz
www.de neinstruments.co.nz
United States (Dallas, TX)
Ph: 214.926.4950
sales@de neinstruments.com
www.de neinstruments.com
South Africa (Johannesburg)
Ph: 087 945 2700
sales@de neinstruments.co.za
www.de neinstruments.co.za
ZEN-RIO Document Revision Code: ZEN-RIO-MAN-15V02 Date Code: 151009