Define ZEN-RIO Relay I/O Expansion Unit Owner’s Manual

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 directly by the ZEN-16’s setpoints, which are in turn easily confi gured using our user-friendly and fl exible WorkBench soft ware.

SPECIFICATIONS

• 16 isolated relay outputs Change over Form C (10A 250V AC or 10A 30V DC), 1kHz scan rate. Soft 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 i2C 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.

UNIT OVERVIEW

Casing & terminals

• 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
• 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

LED indicators

• PWR illuminates when power is connected to the unit.
• BEAT will flash 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 configured 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 off , the respective relay is deenergised, and when the LED is on, the respective relay is energised (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).

WIRING & DIP SWITCHES

Relays 1–16

The relay outputs are located along the upper and lower left sides of the unit (see 2.1A–P), and are wired as shown (right).

LED indicators

The Relay Outputs LED indicators show the active state of each relay. If the LED is off , 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 NO terminal.

Control inputs 1–16

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 Off 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 different types of sensors.)

LED indicators

The Control Inputs LED indicators 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 activated state of the input, regardless of what type of input is being used.

NPN (DIP switch 4: Off )

All digital control inputs must be driven from outputs which can sink current (i.e. active low).

PNP (DIP switch 4: On)

All digital control inputs must be driven from outputs which can source current (i.e. active high).

Power

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%)

CONNECTING TO YOUR ZEN-16

Expansion terminals

Connect your ZEN-RIO to your ZEN-16 using the supplied cable, as shown (right). The lead should be connected from the Expansion Out terminal on the ZEN-16 to the Expansion In terminal on the ZEN-RIO.

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.

Software setup

Soft ware setup of the ZEN-RIO is facilitated through our simple and flexible Define WorkBench software, connected to the ZEN-16.

Note that Define WorkBench does not connect directly to your ZEN-RIO – it connects to the ZEN-16, and all options relating to the ZEN-RIO are configured from there.

Relay Outputs 1-16

The ZEN-RIO’s 16 relay outputs are controlled by the ZEN-16’s 16 setpoints, and are configured from the Setpoints tab. The image below shows the setup page for Setpoint 1 in WorkBench. The output of Setpoint 1 is directly mapped to Relay 1 in the ZEN-RIO, if connected.

Control Inputs 1-16

The 16 digital control inputs on the ZEN-RIO are intended for use with SCADA systems or various plugins supplied by Define 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 serial 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 addressing), 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 fl ags:

Contact:

Industrial Process Measurement, Inc.
3910 Park Avenue, Unit 7
Edison, NJ 08820
732-632-6400
support@instrumentation2000.com
http://www.instrumentation2000.com

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