Vaisala GMW95 User manual

Quick Guide
M211511EN-C
Vaisala HMW90 and GMW90 Series
Transmitters with Digital Output
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PUBLISHED BY
Vaisala Oyj Phone (int.): [phone]
P.O. Box 26 Fax: [phone]
FI-00421 Helsinki
Finland
Visit our Internet pages at www.vaisala.com.
© Vaisala 2013
No part of this manual may be reproduced, published
or publicly displayed in any form or by any means,
electronic or mechanical (including photocopying),
nor may its contents be modified, translated, adapted,
sold or disclosed to a third party without prior written
permission of the copyright holder. Translated manuals
and translated portions of multilingual documents are
based on the original English versions. In ambiguous
cases, the English versions are applicable, not the
translations.
The contents of this manual are subject to change
without prior notice.
This manual does not create any legally binding
obligations for Vaisala towards customers or end users.
All legally binding obligations and agreements are
included exclusively in the applicable supply contract
or the General Conditions of Sale and General
Conditions of Service of Vaisala.

1
ENGLISH
HMW90 and GMW90 Series Digital Models
Measurement type
HMW95/D, HMW90*
Humidity, temperature
GMW95, GMW95D
Carbon dioxide, temperature
GMW95R, GMW95RD,
GMW90*
Carbon dioxide, humidity,
and temperature
Output type
RS-485 (isolated, 1.5 kV)
Output protocols
BACnet MS/TP, Modbus
Supply voltage
18 ... 35 VDC
24 VAC ±20 % 50/60 Hz
Current consumption
(with 120 Ωtermination)
HMW90 series
Average
10 mA at 24 VDC
Maximum
30 mA at 24 VDC
Power consumption
< 0.3 W
GMW90 series
Average
20 mA at 24 VDC
Maximum
50 mA at 24 VDC
Power consumption
< 0.6 W
Dimensions (h × w × d)
132.7 × 81 × 30 mm
Setpoints for CO
2
LEDs
Green 0 ... 800 ppm
Yellow 800 ... 1200 ppm
Red 1200 ... 5000 ppm
Red (blinking) > 5000 ppm
* Configurable model, see Order Form for options.
Datasheets and user’s guides (in English) are
available on product pages at
www.vaisala.com/hmw90
www.vaisala.com/gmw90.
EN

2
Product Safety Information
When installing the transmitter, do not touch
exposed contacts on the component board.
When opening or closing the transmitter, avoid
damaging the transmitter electronics with the
two plastic supports on the bottom of the
mounting base.
Wire the transmitter according to the
terminal label on the mounting base.
Terminal layout depends on transmitter
model, so do not mix mounting bases from
different transmitter models.
If you connect more than one transmitter to a
single 24 VAC transformer, always connect the
phase (~) to the +Vs connector in each
transmitter.
The trimmers only turn 135 degrees each way,
less than half a rotation. Do not force the
trimmer past the stopping point.

3
Transmitter Parts - Outside
Adjustment
trimmers for
measured
parameters
Service port
Locking screw for mounting base
(not included, M3x6 recommended)
Window
for display
Grip
for slide
Display
Locking screw for slide
(not included, M3x6 recommended)
Type label
Gas inlet for
CO2calibration
(GMW models)
CO2level
indicator LEDs
(GMW models)
Holes for
indicator
LEDs
EN

4
Transmitter Body
HTM10 module
(temperature measurement)
DIP switches for protocol
and serial line settings
HUMICAP 180R sensor
(humidity measurement)
DIP switches for
transmitter address
RS-485 termination jumper
(connects a 120 Ωresistor)
GM10 module
(CO
2
measurement)
Mounting Base
Terminal label
Orientation arrow
Opening for cable
Place for zip tie
Opening for cable
Label for RS-485 baud rate
DIP switch settings
Screw terminals

5
Selecting the Location
The conditions at the location should represent well the
area of interest. Do not install the transmitter on the
ceiling. Avoid placing the transmitter near heat and
moisture sources, close to the discharge of the supply
air ducts, and in direct sunlight.
Plan the routing of the cable when selecting the
location. You can bring the cable to the transmitter
from above, or from the center opening of the
mounting base.
When bringing a cable through the wall, note
that the hole may also supply air from outside
the room into the transmitter. This may affect
the measurement readings. For example,
fresh concrete binds CO2and may cause low
readings, especially in new buildings. Seal the
cable opening if necessary.
EN

6
Opening and Closing
To open, use a screwdriver to push down the tab that
holds the transmitter cover and mounting base
together. Pull the mounting base away from the cover,
starting from the top.
To close, connect the bottom of the transmitter first,
and tilt the top forward to close the tab. Closing the
transmitter starts it up if power is supplied to the screw
terminals.

7
Installing the Mounting Base
Use the mounting holes to attach the mounting base
securely. Use at least two screws (not included). The
arrow on the mounting base must point straight up
after installation.
Proper orientation is important
: air
must flow through the vents on the bottom and top.
50
34 27
Ø 4.4
33.5
30.5
29.8
59.5
EN

8
Wiring
When wiring, observe the terminal labels on the
mounting base. Maximum wire size is 2 mm2(AWG14).
The RS-485 line of the transmitter is isolated from the
power supply. A separate ground reference terminal
(
GND
) is provided for the RS-485 connection.
If you are using a shielded cable, you can use the
Shld
terminal to hold the exposed part of the shield. The
Shld terminal is floating (not electrically connected).
D- -VsD+ +Vs
+
-
Power supply
18 ... 35 VDC
or 24 VAC ±20%
RS-485
Shld GND
You can bring the cable
to the housing from
above or from
behind (recommended).
If you are wiring a
GMW90 series
transmitter from above,
use a < Ø 5 mm cable,
and route it from the
left side of the
mounting base.

9
Connecting Several Transmitters
Set the RS-485 termination jumper to “ON” on the
transmitter that is at the end of the line. This terminates
the line with a 120 Ωresistor. For location of the jumper,
see section Transmitter Body on page 4.
Connect the cable shield to ground on the building
controller side.
Transmitter
D-
-Vs
D+
+Vs
Shld
GND
Building controller Transmitter Transmitter
Power
supply
D-
D+
+Vs
-Vs
GND
SHIELD
RS-485:
BACnet or
Modbus
master
Connect shield on controller side
Set RS-485
termination jumper
D-
-Vs
D+
+Vs
Shld
GND
D-
-Vs
D+
+Vs
Shld
GND
EN

10
Configuration DIP Switches
1
ON
2 3 4 5 6 78
Modbus
BACnet
Parity Even
AB C
Parity None
Baud
Rate Metric
Non-Metric
DIP
Position
Setting
1
Modbus
Modbus protocol in use.
BACnet
BACnet protocol in use.
2-4
A B C
Serial line baud rate
Off
Off
Off
Automatic (default)
Off
Off
On
4800
Off
On
Off
9600
Off
On
On
19200
On
Off
Off
38400
On
Off
On
57600
On On Off 76800
On
On
On
115200
5
Parity Even
Parity even (8E1).
Only affects Modbus protocol.
Parity None
Parity none (8N2).
Only affects Modbus protocol.
6
Non-Metric
Use non-metric units (°F).
Only affects display and service port.
Metric
Use metric units (°C).
Only affects display and service port.
7
Not used
8
Not used

11
Address DIP Switches
12 3 4 5 6 78
128 64 32 16 8 4 2 1
Address
(Binary Weighting)
ON
Dip switches marked
Address Binary Weighting
set
the MAC address of the transmitter. The address is
encoded in eight bit binary form, with each numbered
switch representing a single bit. For example:
12 3 4 5 6 78
128 64 32 16 8 4 2 1
ON
Binary: 10100001
Decimal: 161
(128 + 32 + 1)
=
Addressing with BACnet Protocol
BACnet MS/TP MAC address range is 0 … 255. The
address determines if the transmitter is a master or
slave:
-Address range 0 ... 127: transmitter is a master.
-Address range 128 ... 255: transmitter is a slave.
Addressing with Modbus Protocol
Transmitter is always a Modbus slave. MAC address
range for Modbus slaves is 1 … 247.
EN

12
Transmitter Startup
When the transmitter is
powered on, it displays a
sequence of information
screens. The screens are
shown for a few seconds each.
The first screen identifies the
transmitter and the connected
measurement modules,
and shows if the transmitter
is operating normally
(status OK) or if there is an
error (status ERROR).
The second screen shows
configuration information that
is relevant to the selected
communication protocol
(BACnet or Modbus)
After the startup screens the
transmitter shows the
measurement screen. It shows
the measured parameters and
currently active indicators.
It is normal for CO2
measurement to read 0 ppm
for a few seconds after the
startup.

13
Trimmer Adjustment (RH and T)
Before starting the adjustment, compare
the reading of the transmitter to a
calibrated reference instrument so you
know how much adjustment is needed.
You can use, for example, the HM70 hand-
held humidity and temperature meter.
To enter the adjustment screen, select the
parameter to adjust, and rotate the RH or T
trimmer slightly during normal
measurement. If the trimmer is not
centered, you see the trimmer centering
screen first. Simply turn the trimmer to the
center and wait for the progress bar to
complete.
In the adjustment screen, turn the trimmer
to set the desired correction. To commit the
change, stop turning the trimmer and wait.
If you wish to apply a greater correction
than allowed by the trimmer in a single
adjustment, re-enter the adjustment screen
and apply a new correction. Corrections
applied using the trimmers are cumulative.
EN

14
Trimmer Adjustment (CO2)
Transmitter models with CO2measurement
have an inlet for calibration gas. Supply the
calibration gas with a known concentration
(for example, 1000 ppm) to this inlet using
a 3 mm inner diameter silicone tube and a
0.4 l/min flow.
Turn on the gas flow and wait for three
minutes for measurement to stabilize.
If you are adjusting without calibration gas,
avoid breathing on the transmitter.
You should only adjust the transmitter
when the CO2reading is stable.
Rotate the CO2trimmer slightly during
normal measurement. If the trimmer is not
centered, you see the trimmer centering
screen first. Simply turn the trimmer to the
center and wait for the progress bar to
complete.
In the adjustment screen, turn the trimmer
to set the desired correction. To commit
the change, stop turning the trimmer and
wait. The transmitter will show with a text
screen if the adjustment was successful, or
failed due to an unstable CO2reading.
As with the RH and T adjustment, repeated
trimmer adjustments are cumulative. Wait
for a few minutes between adjustments to
allow the CO2reading to stabilize.

15
Indicators
Communication arrows
Shown on top right of the screen. Down
arrow is shown when transmitter detects
valid traffic on the RS-458 line. Up arrow is
shown when transmitter is transmitting to the
RS-485 line.
MI70 connection indicator
Shown on top left of the screen if an MI70
Indicator is connected to the service port.
Alert indicator and error text
Shown on bottom of screen if there is an
error active. Followed by an error text. If
more than one error is active, the error text
will cycle through the errors.
When the alert indicator and error text are
shown, typically one or more measurement
readings are replaced with stars. This means
these measurements are affected by the
error.
EN

16
Errors
Error Type
Cause and Possible Solution
HTM10 error Problem with HTM10 module.
-Check that the module sits firmly
in place. Remove and reconnect.
-Check for missing or damaged
HUMICAP® sensor.
-Check for condensation on the
HUMICAP® sensor. Wait for the
sensor to dry out.
-Replace the module if unable to
remove the problem.
GM10 error Problem with GM10 module.
-Check that the module sits firmly
in place. Remove and reconnect.
-Check that supply voltage is in
range.
-Replace the module if unable to
remove the problem.
Internal error Internal problem with the transmitter.
-Restart the transmitter.
-Restore the factory settings using
service port if reset does not
help.
-Contact [e-mail] if
unable to remove the problem.

17
DEUTSCH
Digitalmodelle HMW90 und GMW90
Art der Messung
HMW95/D, HMW90*
Feuchte, Temperatur
GMW95, GMW95D
Kohlendioxid, Temperatur
GMW95R, GMW95RD,
GMW90*
Kohlendioxid, Feuchte und
Temperatur
Ausgangstyp
RS-485 (isoliert, 1,5 kV)
Ausgabeprotokolle
BACnet MS/TP, Modbus
Versorgungsspannung
18 ... 35 V DC
24 V AC ±20 %, 50/60 Hz
Stromaufnahme
(mit 120-Ω-Abschluss-
widerstand)
Baureihe HMW90
Durchschnitt
10 mA bei 24 V DC
Maximum
30 mA bei 24 V DC
Stromverbrauch
< 0,3 W
Baureihe GMW90
Durchschnitt
20 mA à 24 VCC
Maximum
50 mA à 24 VCC
Stromverbrauch
< 0,6 W
Abmessungen (H × B × T)
132,7 × 81 × 30 mm
Schaltschwellen
für CO2-LEDs
Grün 0 ... 800 ppm
Gelb 800 ... 1200 ppm
Rot 1200 ... 5000 ppm
Rot (blinkend) > 5000 ppm
* Konfigurierbares Modell, Optionen siehe Bestellformular.
Datenblätter und Benutzerhandbücher
(in Englisch) sind auf den Produktseiten unter
www.vaisala.com/hmw90
www.vaisala.com/gmw90 verfügbar.
DE

18
Produktsicherheitsinformationen
Beim Einbauen des Messwertgebers
keine freiliegenden Kontakte auf der
Komponentenplatine berühren.
Beim Öffnen oder Schließen des
Messwertgebers die Messwertgeberelektronik
nicht mit den beiden Kunststoffstützen unten
auf der Montageplatte beschädigen.
Messwertgeber unter Beachtung des
Anschlussetiketts auf der Montageplatte
verkabeln. Die Anschlussbelegung ist
vom Messwertgebermodell abhängig,
die Montageplatten unterschiedlicher
Messwertgebermodelle dürfen deshalb
nicht vermischt werden.
Wenn Sie mehr als einen Messwertgeber
an einen einzelnen 24-V-AC-Transformator
anschließen, müssen Sie die Phase (~) mit
dem +Vs-Anschluss der Messwertgeber
verbinden.
Die Trimmer lassen sich nur um 135 Grad nach
rechts bzw. links drehen (weniger als eine
halbe Drehung). Drehen Sie die Trimmer nicht
über den Anschlag hinaus.