AFA 1000
FUME HOOD ALARMS
Operating and Instruction Manual
Model AFA1000 / 1
Used for alarm indication and monitoring on
Fume Hoods
• Digital display
• 1 Output relay
• 3 Input relays
• Com port
1/MK3/FH/USPSU
250804
1
Table of contents
Section
1
:-
Description
Operator display panel
Page
3
2
3
4
5
6
7
8
9
10
Connection details
General description – overview
Installation
Start-up / Calibration
Monitor configuration
Events – actions
Dimensions
In-line sensor installation
Wiring diagram
4
5 to 8
8
9 to 11
11
12 to 15
16 to 17
18 to 19
20
11
12
Limitation of Warranty and Liability
13
Spares
Contact us
21
22
22
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1.0 Operator Display Panel
Velocity Bar Graph or
Alarm Ti me Line
Velocity display fpm or m/sec
LED indicators
Function and up/down buttons
for Menu Configuration and
Calibration.
ENTER – also used as
Mute button for audible alarm
3
2.0 Connection details
OUTPUT
RELAY
R1
RS 232
Com Port
IDC
14-way
Connector
for remote
Interface Box
( Optional )
SM6 or Inline
Airflow Sensor
Flying lead with RJ11
plug connection for PCB
and SM6 airflow sensor
Notes :-
Inputs 1 2 & 3 are volt free inputs. (Max line resistance 4.7K ohms) (Short circuit current 5mA DC)
Relay output R1 is a power limited volt free contact. Contact rating 30VAC / 42VDC Max
Primary power requirement - 110mA @ 120VAC ( 3A Fused supply recommended ).
TEL
MADE IN ENGLAND
www.tel-uk.com
AFA 1000 USA
SENSOR
REFER TO
INSTALLATION
INSTRUCTIONS
BEFORE
CONNECTING
Sash High
Proximity switch
s/w
( Optional )
-
INPUT 3
+
INPUT 2
Blu
Blk
Brn
Sash High
Micro - switch
( Optional )
INPUT 1
15V DC
POWER
SUPPLY
INPUT
Flying lead with plug
connection for PCB
15 V DC
120V
PSU
120V / 15V DC
Plug – in power adapter for
120V socket
Power requirement - 110mA
@ 120v AC Supply
4
3.0 General Description
All systems comprise of the following components :-
1 – In-line Airflow Sensor,
1 – AFA1000 Alarm unit,
1 – AC power supply
If the Sash Alarm System option is included there will also be a sash micro switch
or proximity switch.
Operator Features --- the alarm has the following operator features :-
Digital Display
The digital display is a back-lit, full graphic unit with a visual display of approx
2.2" x 1.18 ". The display operates through the software allowing the generation
of figures, wording and Icons.
The display shows the fume hood face velocity in m/sec or fpm when enabled
or the alternative with no velocity reading but showing LOW AIR / NORMAL as
continuous display.
All of the above are configurable via the alarm key pad.
An ‘ event time line ’ segmented into 20 x 3 minute segments will scroll across
the display ( when enabled) .This takes the form of a graphical ‘ blip’ that will
progress from the right hand side to the left hand side – representing events that
have occurred during the past hour. On the standard alarm this will be limited to
airflow alarms but other alarms are available.
The alternative to the event time line is a dynamic ‘ bar graph ’ representing the
face velocity
The display shows a Horn icon ( with line through it ) when the audible alarm is in
the Muted condition
Sash High – will be displayed when the Sash alarm is enabled and the sash
is raised above the max safe working opening.
This display will alternate on/off with the velocity reading.
Ext Alarm – will be displayed when the external alarm input is activated ( when
enabled )
This display will alternate on/off with the velocity reading
Low Air - will be displayed if the airflow is less than the Low air alarm point.
This display will alternate on/off with the velocity reading
5
High Air - will be displayed if the airflow is more than the High air alarm point.
This display will alternate on/off with the velocity reading
Set-back - will be displayed if the night set-back function is activated ( when
enabled )
This display will alternate on/off with the velocity reading
Disabled - will be displayed if the alarm disable function is activated ( when
enabled )
This display will alternate on/off with the velocity reading
LED Indicators ---- the alarm unit has three LED indicators : Red -- Low
Amber -- Caution
Green -- Normal
Audible Alarm sounder -- the alarm has an audible alarm sounder with local or
remote Mute facility
Enter --- the alarm has an Enter button -- this is multi-functional as follows : Press Enter momentarily when alarm is sounding will mute the alarm.
The horn can be permanently disabled using the configuration menu.
When this option is selected the Horn Icon with the word OFF will
permanently appear on the display.
Press Enter for 5 secs will gain access to Calibration and
Configuration menus ( both menus password protected )
+ / - -- the alarm has + / - buttons that can be used to scroll through the
calibration and configuration menu or to select options or values
6
External Connections -- the alarm unit has the following connection points :-
Input 1 --- volt free relay input configurable for normally closed or normally
open relays
This input can be configured as : Alarm disable
Night set-back
External alarm
Sash High
High / Low
Input 2 --- volt free relay input configurable for normally closed or normally
open relays
This input can be configured as : Alarm disable
Night set-back
External alarm
Sash High
High / Low
Input 3 --- volt free relay input configurable for normally closed or normally open
relays
This input can be configured as : Alarm disable
Night set-back
External alarm
Sash High
High / Low
Output 1 --- volt free relay output configurable as normally closed or normally
open relay .
Com Port --- for communications to building computer system ( BMS)
Power supply --- low voltage DC power supply
Airflow Sensor --- connection socket for the face velocity airflow sensor.
7
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