Automated Logic ZN551 Technical Instructions
ZN551 Control Module
Technical Instructions
What is the ZN551 control module? ........................................................................... 2
Module driver and control program ................................................................ 2
Specifications ...............................................................................................2
Inputs ...........................................................................................................3
Room sensors................................................................................................3
Digital outputs...............................................................................................3
Analog outputs..............................................................................................3
To mount the ZN551.................................................................................................. 4
Wiring for power ........................................................................................................ 4
To wire for power............................................................................................4
To address the ZN551................................................................................................ 5
Wiring for communications ........................................................................................ 5
Wiring specifications .....................................................................................5
To wire the ZN551 for communications ..........................................................5
Wiring inputs and outputs.......................................................................................... 6
Wiring specifications .....................................................................................6
To wire inputs and outputs............................................................................. 7
Downloading memory................................................................................................ 9
To download memory in WebCTRL..................................................................9
To assign inputs or outputs to points........................................................................... 9
Input values.................................................................................................10
Output values..............................................................................................10
Resolution values ........................................................................................11
Offset/Polarity values.................................................................................. 11
Using flow sensors................................................................................................... 12
To connect the duct tubes to the flow sensors...............................................12
To wire the flow sensor to the control module................................................12
To set up the Airflow Control microblock.......................................................12
To set up the module driver ...................................................................................... 13
Driver ..........................................................................................................13
Device......................................................................................................... 14
Notification Class #1...................................................................................14
Common Alarms.......................................................................................... 15
Custom Translation Tables...........................................................................15
To communicate through the local access port .......................................................... 16
To set up a Local Access connection in WebCTRL.......................................... 16
Troubleshooting ...................................................................................................... 16
Formatting the control module.....................................................................17
LED's..........................................................................................................17
Manufacture date........................................................................................18
Compliance ............................................................................................................ 18
Automated Logic Corporation • 1150 Roberts Blvd. • Kennesaw, GA 30144 • 770/429-3000 • Fax 770/429-3001 •
www.automatedlogic.com • © 2005 Automated Logic Corporation. All rights reserved throughout the world. Automated
Logic Corporation, the Automated Logic logo, WebCTRL, EIKON, BACview, SuperVision, and InterOp are registered
trademarks, and Alert is a trademark of Automated Logic Corporation. BACnet
All other brand and product names are trademarked by their respective companies.
®
is a registered trademark of ASHRAE.
What is the ZN551 control module?
The ZN551 control module is used for zone control.
Module driver and control program
Specifications
Module driver DRV_ZN
Maximum number of control
programs
Maximum number of
BACnet objects*
* Depends on available memory
Power
CMnet port
Rnet port
LStat port
Local access port For system start-up and troubleshooting
Inputs
Input resolution 10 bit A/D
1
200
24 Vac ±10%, 50–60 Hz, 15 VA
26 Vdc (25 V min, 30 V max)
For communication with the control module network using
ARC156 or MS/TP (9600 bps–76.8 kbps)
For RS room sensors. The Rnet port supports up to four
RS sensors and one RS Pro or RS Plus sensor for
averaging or high/low select control.
NOTE The ZN551 does not support BACview.
For LogiStat and LogiStat Plus room sensors. The LogiStat
port uses two universal inputs.
NOTE The ZN551 does not support the LogiStat Pro. Use
an RS Pro on the Rnet port instead.
5 inputs configurable for thermistor or dry contact. Inputs
1 and 2 are also configurable for 0–5 Vdc. Inputs 4 and 5
are used when a LogiStat sensor is connected, but are
available if an RS room sensor is connected.
Digital outputs
Analog output 1 analog output, 0–10 Vdc (5 mA max)
Output resolution 8 bit D/A
Memory
Battery
Protection
ZN551 Control Module • Rev. 3/17/2005 2 © 2005 Automated Logic Corporation
5 digital outputs, relay contacts rated at 1 A max. @ 24
Vac/Vdc. Configured normally open.
512 kB non-volatile battery-backed RAM, 1 MB Flash
memory, 16-bit memory bus
10-year Lithium CR2032 battery provides a minimum of
10,000 hours of data retention during power outages
Incoming power and network connections are protected
by non-replaceable internal solid-state polyswitches that
reset themselves when the condition that causes a fault
returns to normal. The power, network, analog inputs,
analog outputs, and relay output connections are also
protected against voltage transient and surge events.
Inputs
Status indicators
Environmental operating
range
Physical Rugged GE C2950 Cycoloy plastic
Overall dimensions
Mounting dimensions 5 9/16" (14.1 cm) between mounting slot centerlines
Weight 0.6 lbs (0.27 kg)
BACnet support
Listed by
The ZN551 has 5 inputs that accept the following signal types:
These
inputs...
All Thermistor
All Dry contact
IN-1, IN-2 0–5 Vdc
IN-4, IN-5 LogiStat IN-4–See Thermistor.
Support this
signal type...
LED's indicate status of communications, running, errors,
power, and digital outputs
0 to 130°F (-17.8 to 54.4°C), 10–90% relative humidity,
non-condensing
Width:
Height:
Conforms to the Advanced Application Controller (B-AAC)
Standard Device Profile as defined in ANSI/ASHRAE
Standard 135-2004 (BACnet) Annex L
UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart BClass A, CE EN50082-1997
Description
Precon type 2 (10 kOhm at 77°F). Input voltages will be
from 0.33 Vdc to 2.52 Vdc for thermistors.
A 3.3 Vdc wetting voltage detects contact position,
resulting in a 0.3 mA maximum sense current when the
contacts are closed.
The output impedance of a 0–5 Vdc source must not
exceed 100 Ohms. The input impedance of the ZN551
is approximately 30 kOhm.
IN-5–Setpoint adjust. Input voltages should be from
1.4–3.4 Vdc.
5 1/16 in. (12.9 cm)
5 11/16 in. (14.4 cm)
NOTE A LogiStat sensor connected to the ZN551 uses IN-4 and IN-5. An RS
room sensor connected to the Rnet port does not use these inputs.
Room sensors
Digital outputs
Analog outputs
ZN551 Control Module • Rev. 3/17/2005 3 © 2005 Automated Logic Corporation
You can wire an RS Standard, RS Plus or RS Pro to the ZN551's Rnet port.
Or you can wire a LogiStat or LogiStat Plus to the ZN551's LStat port. See the
RS Room Sensors Technical Instructions (http://info.automatedlogic.com) or
the LogiStat Sensors Technical Instructions (http://info.automatedlogic.com).
NOTE The ZN551 does not support the LogiStat Pro.
The ZN551 has 5 digital outputs. You can connect each output to a
maximum of 24 Vac/Vdc. Each output is a dry contact rated at 1 A, 24 V
maximum and is normally open.
The ZN551 has 1 analog output that supports voltage devices from 0-10 Vdc.
The controlled device must have a minimum of 2000 Ohms resistance
t
t
To mount the ZN551
measured from its input to ground and must share the same ground as the
control module.
Screw the ZN551 into an enclosed panel using the mounting slots provided
on the cover plate. Leave about 2 in. (5 cm) on each side of the control
module for wiring.
Mounting slo
Wiring for power
To wire for power
Mounting slo
CAUTIONS
• The ZN551 is a Class 2 device (less than 30 Vac, 100 VA). Take
appropriate isolation measures when mounting it in a control panel
where non-Class 2 devices (120 Vac or greater) are present.
• Do not power pilot relays from the same transformer that powers the
ZN551.
NOTE You can power several control modules from the same transformer if
you maintain the same polarity.
1 Remove power from the 24 Vac transformer.
2 Pull the screw terminal connector from the control module's power
terminals labeled Gnd and 24 Vac.
3 Connect the transformer wires to the screw terminal connector.
4 Apply power to the transformer.
5 Measure the voltage at the ZN551’s power input terminals to verify that
the voltage is within the operating range of 21.6–26.4 Vac.
6 Insert the screw terminal connector into the ZN551's power terminals.
7 Verify that the Power LED is on and the Run LED is blinking.
ZN551 Control Module • Rev. 3/17/2005 4 © 2005 Automated Logic Corporation
10's1
To address the ZN551
You can address the ZN551 before or after you wire the control module for
power.
1 If the ZN551 has been wired for power, pull the screw terminal connector
2 Using the rotary switches, set the control module's address to match the
from the control module's power terminals labeled Gnd and 24 Vac. The
control module reads the address each time you apply power to it.
Address in the control module's Device Properties dialog box in
SiteBuilder. Set the Tens (10's) switch to the tens digit of the address,
and set the Ones (1's) switch to the ones digit.
EXAMPLE If the control module’s address is 35, point the arrow on the
Tens (10's) switch to 3 and the arrow on the Ones (1's) switch to 5.
's
Wiring for communications
The ZN551 communicates using BACnet on the following types of network
segments:
• ARC156 communicating at 156 kbps
• MS/TP communicating at 9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps
NOTE ARC156 is a unique implementation of the industry standard
ARCNET. For a summary of differences between ARCNET and ARC156, see
the ARC156 Wiring Technical Instructions (http://info.automatedlogic.com).
Wiring specifications
To wire the ZN551 for communications
For... Use... Maximum Length
ARC156
MS/TP
* See the ARC156 Wiring Technical Instructions (http://info.automatedlogic.com).
1 Pull the screw terminal connector from the control module's power
terminals labeled Gnd and 24 Vac.
2 Check the communications wiring for shorts and grounds.
3 Connect the communications wiring to the control module’s screw
terminals labeled Net +, Net -, and Shield.
NOTE Use the same polarity throughout the network segment.
22 AWG, low-capacitance, twisted,
stranded, shielded copper wire*
A dedicated 22 AWG to 18 AWG
twisted pair wire (EIA-485)
2000 feet (610 meters)
3000 feet (914.4 meters) for 9600
bps, 19.2 kbps, or 38.4 kbps
2000 feet (610 meters) for 76.8 kbps
ZN551 Control Module • Rev. 3/17/2005 5 © 2005 Automated Logic Corporation
4 Set the communication type and baud rate.
For...
ARC156 ARC156 N/A. Baud rate will be 156 kbps
MS/TP MSTP The appropriate baud rate. See the MSTP
NOTE Use the same baud rate for all control modules on the network
segment.
5 Insert the power screw terminal connector into the ZN551's power
terminals.
6 Verify communication with the network by viewing a module status
report in WebCTRL.
Wiring inputs and outputs
Wire the ZN551's inputs and outputs as follows.
Wiring specifications
Input wiring
Input Maximum length Minimum gauge Shielding
Set Communications
Selection jumper to...
Set DIP switches 1 and 2 to...
regardless of the DIP switch settings.
Baud diagram on the control module.
0–5 Vdc
1000 feet
26 AWG Shielded
(305 meters)
Thermistor
Dry contact
RS room sensors
LogiStat
1000 feet
(305 meters)
500 feet
(152 meters)
100 feet
22 AWG Shielded
22 AWG,
4 conductor
22 AWG
2
1
Shielded or
unshielded
Unshielded
(30 meters)
1
See the RS Room Sensors Technical Instructions (http://info.automatedlogic.com).
2
See the LogiStat Sensors Technical Instructions (http://info.automatedlogic.com).
Output wiring
To size output wiring, consider the following:
• Total loop distance from the power supply to the control module, and
then to the controlled device
NOTE Include the total distance of actual wire. For 2-conductor wires,
this is twice the cable length.
• Acceptable voltage drop in the wire from the control module to the
controlled device
• Resistance (Ohms) of the chosen wire gauge
• Maximum current (Amps) the controlled device requires to operate
ZN551 Control Module • Rev. 3/17/2005 6 © 2005 Automated Logic Corporation
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