IQ251 Controller Data Sheet

Data Sheet
IQ251
Controller
IQ251 CONTROLLER
Description
Features
The IQ251 is a large capacity controller designed for the control of
all types of building plant. It can provide up to 128 I/O points by
connecting 8 I/O modules in any combination. The range of I/O
modules comprises an 8 analogue plus 8 digital input module, an
8 analogue output module, and an 8 digital output module. Trend
accessory modules may be connected to the input/output channels
to provide greater I/O flexibility. They enable the IQ251 to provide
sufficient capability for more complex strategies. It can operate
either as a stand alone device or as part of a Building Management
System. An optional Network Display Panel can be fitted on the front
cover, or remotely. It provides access to all IQ controllers on a single
or multi-Lan system via a node controller integrated within the
IQ251. The IQ251 also provides the ability to connect any Trend
supervisor or Engineering Tool to the network without the need for
a separate node controller.
•
•
•
•
•
•
•
•
•
•
•
1 second cycle time.
Optional integral Network Display Panel.
Access to entire network via local supervisor connection.
Facility for mounting an additional node controller.
High capacity DDC with PID control loops.
Stand alone or integrated system operation.
Up to 8 input/output modules for optimum configuration.
Up to 96 logs.
Up to 1000 values per log.
Compatible with IQ151+ data files.
Flexible I/O combinations
main ac supply
Physical
440 mm (17.32”)
network display panel
(optional)
I/O modules
13
# T X R X
auxiliary node
knockout
O N
A D D R E S S
175 mm (6.9”)
I/O modules
network
LED
indicators connector
supervisor
RS232/modem (for auxiliary node)
network address/baud
550 mm (21.7”)
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
1
IQ251
Data Sheet
FUNCTIONALITY
The IQ Controller’s functionality can be divided into three sections, strategy, firmware, and hardware.
STRATEGY
Module Type
The strategy processes inputs according to a set of instructions
and then outputs signals which can be used to control plant.
Configuration: The IQ251 uses the standard IQ configuration
mode which enables configuration via the network, or via the
supervisor port. SET can be used to create a strategy data file
(.IQ2) which can then be downloaded to the controller and
subsequently uploaded for backup purposes if connected to the
controller directly or via the network. PowerTool can be used to
upload and download IQ2 files if connected via a modem.
Modules: The strategy consists of a number of individual
functional blocks known as configuration modules. These blocks
can be linked in various combinations to enable plant to be
controlled in accordance with the building’s requirements. The
table lists the different types of configuration modules and the
number of each type available with IQ251.
Number
Sensor
96
Sensor type
Loop
Module Type
Number
Critical Alarm
4
20
Alarm Histor y
20
32
IC Comms
16
Function
240
Digital Inputs
96
Logic
240
Fast Sequence
8
Driver
64
Zone
5
Knob
60
Schedule
32
Switch
60
Calendar
20
Sensor log
96
User Password
6
Sequence step
560
Sequence time
Analogue Nodes
510
Digital Nodes
Display
400
Directory
80
Page
80
Group
10
Route
50
Destination
7
New Alarm Log
300
1s
1012
Full details of the modules are given in the IQ Configuration Manual and Addendum. The IQ251 contains the normal IQ2 features
as described in IQ Configuration Manual Addendum: Engineers Journal (J), I/O Summary (i/o) Loader Issue (R(c),’c’ lower case),
Serial Number (R(s), ‘s’ lower case), Supply Frequency Option, Enhanced Logging, Module position, and Strategy Cleardown.
External Channels: Because the I/O modules may be fitted in
any combination in any of the 8 I/O slots, the channel numbers
must be carefully identified. In configuration mode the IQ251
identifies the external channel numbers corresponding to the
module number (in the case of sensors or digital inputs) or output
channel number (in the case of drivers).
Sensor Channels
The sensor and digital input modules, and the output channels
specified in the driver modules are related to the external channels
as shown in the table:
Digital Input Channels
Driver Channels
Sensor Number
External Channel
Dig. Input Number
External Channel
Output Channel
External Channel
S1 to S8
AA1 to AA8
I1 to I8
AD1 to AD8
1 to 8
E1 to E8
S9 to S16
BA1 to BA8
I9 to I16
BD1 to BD8
9 to 16
F1 to F8
S17 to S24
CA1 to CA8
I17 to I24
CD1 to CD8
17 to 24
G1 to G8
S25 to S32
DA1 to DA8
I25 to I32
DD1 to DD8
25 to 32
H1 to H8
S33 to S48
internal only
I33 to I48
internal only
33 to 48
dummy channels
A1 to A8
S49 to S56
EA1 to EA8
I49 to I56
ED1 to ED8
49 to 56
S57 to S64
FA1 to FA8
I57 to I64
FD1 to FD8
57 to 64
B1 to B8
S65 to S72
GA1 to GA8
I65 to I72
GD1 to GD8
65 to 72
C1 to C8
S73 to S80
HA1 to HA8
I73 to I80
HD1 to HD8
73 to 80
D1 to D8
S81 to S96
internal only
I81 to I96
internal only
81 to 96
dummy channels
The external channels are referenced as follows:
[module position],[analogue(A) or digital(D) - input module only],[channel number]
module position
A
E
B
F
C
G
D
e.g.
2
BA1
BD1
F1
A7
GD8
13
# H
position B, Analogue input, channel 1
position B, Digital input, channel 1
position F, output channel 1
position A, output channel 7
position G, Digital input, channel 8
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
Data Sheet
IQ251
FIRMWARE
Communications: When operating as part of a Building
Management System, the IQ251 will be connected to other
devices via the Trend Network. This means that information
within the IQ251 can be accessed using one of the Trend
supervisor programs, or passed to other Trend IQ controllers
using inter-controller communications, enabling the sharing of
information across the whole system.
When connected to the network the controller can use up to 3
different addresses. One address is for the controller itself (set
by front panel switch) the second and third are optional, and are
for the locally connected supervisor (supervisor port address)
and for an integral NDP (ndp port address). Thus both local
supervisor and NDP have their own network addresses when
connected to the network via the controller.
The controller’s address is set by a switch, and the address for
the local supervisor and NDP are set up in the strategy
configuration (address module).
Battery Status: The IQ251 has a battery status checking circuit
that checks the battery on power up and thereafter every midnight
and sets byte 506 bit 0 if the voltage has falls below a threshold
value. This bit being set indicates that the battery needs to be
changed. It should be used within the strategy to generate an
alarm (e.g. critical alarm). The battery should be changed after
the first indication. The battery will have a typical life of 10 years
at 20 °C (68 °F). It is recommended that the battery is replaced
every 5 years.
Address/Baud rate switch: The address on the Lan is set by poles
1 to 7 in range 1, 4 to 9, 11 to 119 and must be unique on the Lan.
The baud rate is set by poles 8 to 10 in the range 1k2, 9k6, 19k2
and must match the other nodes on the Lan. The address/baud rate
switch may also be used to perform a strategy cleardown; this is
done by setting all the address/baud rate poles to zero before
power up (see Installation Instructions, TG103483 sheet 4 and IQ
Configuration Manual Addendum). For this reason the address
should normally be set non-zero.
Battery Backup: Details about the strategy configuration, time
and date, and logged data are stored in RAM. A plug-in lithium
cell provides power to maintain the data in the event of power
failure, or the controller being switched off.
Auxiliary Supply: There is a 24 Vdc auxiliary supply provided
on the power supply board to power external relay modules,
sensors, external NDP etc. It is thermally protected and can
supply a maximum of 500 mA. This will normally be available, but
if the IQ251 has a full complement of I/O modules with integral
NDP, and an integral comms node fitted the amount of auxiliary
power available for other purposes will have to be calculated.
The 24 Vdc supply in the IQ251 has 2100 mA available after
deduction of current required for main board and network. This
has to supply I/O modules, integral node, integral NDP, and the 24
Vdc auxiliary supply. These loads can be calculated as follows:
2 1 0 0 m A
7 5 m A o p tio n a l
v a r ia b le
HARDWARE
Unit: The IQ251 has a metal chassis and a front cover consisting of
a plastic fascia on a metal frame. The I/O modules are of aluminium
extrusion. The I/O modules are fitted to the controller by snapping off
a section in the cover and removing the relevant side plate. The
module connector then slides into a socket on the controller. There is
an option to fit a 16 terminal earthing bar below each I/O module for
cable screens (Part/LA102359K). Cable access is via holes in the
rear plate, or from top or bottom, cables can be run down the central
column behind the controller board. Cleats are fitted to the rear plate
to facilitate cable fixing. There is a 25 Way D type knockout on the
bottom of the front panel for RS232 connection to an auxiliary node,
and a circular knockout for M20 gland or grommet for internetwork,
PSTN, ISDN or Lon cables. If required the IQ251 can be fitted in an
IP55 metal enclosure (ENCLS).
Connectors: Two part connectors are used throughout to
facilitate wiring. A busbar is provided for screen termination.
Power: 230 Vac 50/60 Hz, 24 Vac 50/60 Hz, or 24 Vdc.
Fusing: The controller has no replaceable fuses; protection is
provided by means of a self-resetting thermally protected transformer.
The 24 V ac or dc version has a solid state multifuse. The I/O
modules are also individually protected against short circuits.
Indicators: LED indicators for receive and transmit network current
flow (RX, TX) and network OK ( ), also for power ( ), all I/O channels
( ), and watchdog ( ). See specification section for details.
Network: The network terminals facilitate connection of 2 or 4
wire cables. The standard Trend node features are included
(TX, RX, and network OK, , indicators, bypass relay, and
network alarm generation). There is also the facility for connection
of a supervisor and integral network display panel to the network
via the controller without the need for additional node controllers.
Note that the IQ251 does not have a balanced line transmitter
like other IQ2 series controllers and this may result in reduced
network resilience. Balanced transmission can be achieved with
the use of a BLT (Balanced Line Transmitter).
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
( e .g . 2 5 0 ) o p tio n a l
5 0 0 m A ( m a x im u m )
N D P
I/O
n o d e
A U X
Input module
8 digital inputs @ 8 mA per channel
8 analogue inputs @ 20 mA per channel (thermistor and voltage
inputs can be ignored)
Max total for whole I/O module = (8x8)+(20x8) = 224 mA
Output module
8 analogue outputs @ 20 mA per channel
Max total for whole board = 20x8 = 160 mA
8 digital outputs @ 24 mA per channel
Max total for whole I/O module = 24x8 = 192 mA
Integral NDP= 75 mA
Integral Node (e.g. TMN) = 250 mA.
(For consumption of other nodes see the respective data sheet).
For example:
IQ251 with 4 input I/O modules, 2 digital output I/O modules, 2
analogue output I/O modules, an integral NDP, and an MNC.
How much current is available from the auxiliary supply?
Current consumed:
4 input I/O modules (all analogs are current) 4 x 224 =896
mA
2 digital output I/O modules
2 x 192 mA=384 mA
2 analogue output I/O modules (at max).
2 x 160 mA=320
mA
1 NDP
75 mA
1 TMN
250 mA
Total
1925 mA
Current available:
2100 - 1925 =175 mA
3
IQ251
Data Sheet
HARDWARE (continued)
I/O modules: The IQ251 has a range of I/O modules which may be fitted in any combination in the 8 I/O slots. The range comprises
an 8 analogue and 8 digital input module (EIN), an 8 analogue output module (EAO), and an 8 digital output module (EDO).
Inputs: The input channel combination is dependent on the number of input modules fitted. Each EIN module provides 8 analogue,
and 8 digital inputs.
Analogue Input (8 identical channels)
24V
8
8
C
24V
100K
10K
IN
1
IN
4K7
100K
250R
27K
5V
Digital Input (8 identical channels)
Yellow
6
0V
100K
C
0V
Externally powered
current sensor
0V
Outputs: The output channel combination is dependent on the output modules fitted. There are two different modules; the EDO which
provides 8 digital outputs, and the EAO which provides 8 analogue voltage outputs. A Trend 2VID interface module can be used in
conjunction with 2 analogue voltage outputs to provide 2 analogue current outputs.
Digital Output (8 identical channels)
ON
Analogue Voltage Output
(8 identical channels)
+24
N/C
N/O
C
22R
Auto OFF
Digital outputs have manual override facilities as indicated above.
3K9
100R
Warning: High voltage may be present.
Isolate elsewhere.
OUT
COM
0V
Yellow
0V
Link Headers: A range of link headers is available to enable the input channels to accept a wider range of inputs:
LKE/5V
Provide 5V, 20 mA supply
Provides 10 mA supply (e.g. for potentiometer)
IQ 2 5 x
1 0 0 K
1 0 0 K
LKE/10mA
IQ 2 5 x
2 5 0 R
L K E /1 0 m A
2 0 0 R
5 V
R E G
1 2 5 R
If the input device is 100 Ω to
1000 Ω, the analogue input will be
1 V to 10 V.
L K E /5 V
C
IN
0 V
IN
C
5 V
S e n s o r
LKE/15V
Provides 15 V, 20 mA supply
IQ 2 5 x
1 0 0 K
1 0 0 K
LKE/DI
A n in
Converts analogue input to digital input.
2 5 0 R
IQ 2 5 x
2 5 0 R
L K E /D I
1 5 V
R E G
Y e llo w
1 2 V
5 K 6
L K E /1 5 V
2 4 V
IN
C
0 V
1 5 V
IN
C
S e n s o r
Note: If LKE/DI is fitted, there is a special strategy module to
support it (see LKE installation instructions TG102847).
4
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
Data Sheet
IQ251
HARDWARE (continued)
Side View
Top View
To install a link header on a channel, the input links are removed
and the link header is plugged onto the input linking pins of the
EIN board, with the link header board nearest the input connector
as shown:
A In -1
IN
C
A In
12345
IN
C
12345
12345
12345
A In -1
A In
link header
in position
A In + 1
IN
C
A In + 1
A I4
IN
C
A I4
link header board
nearest to input
connector
input connector
Displays and Local Supervisor: The IQ251 has 2 ports, the local supervisor port on the front panel (RJ11) and the NDP port under the
top cover on the main board.
These correspond to the two extra CNC addresses provided by the IQ251: the local supervisor port address, and the NDP port
address.
Unit with cover removed
AUX
+24 V supply
NDP
24 V supply
NDP port
O N
A D D R E S S
local supervisor port (RJ11)
Network Display Panel: The optional NDP can be mounted
integrally on the front cover, using the NDP port and a special
24 V connector, or remotely, using the local supervisor port
(RJ11) and the AUX supply connector. It provides access to all
IQ controllers on a single or multi-Lan system without the need
for an additional node controller although it does have its own
network address. Using icons, and softkeys it allows an operator
to perform, under password protection, supervisory functions,
such as setpoint adjustments, or to view logs and alarms from
all controllers on the system. It can be powered from the IQ251.
It uses 75 mA from the 24 Vdc supply (see auxiliary supply
section above). If an NDP is connected externally, the
CABLE/EJ1104029 should be used to connect both the signal
(RJ11) and power (AUX).
Supervisor: A PC running a Trend Supervisor or Utility program
can be connected to the network via the controller’s supervisor
port without the need for an additional node controller although
it does have its own network address. When connected in this
way the PC will have access to all devices on the network, and
will function as if it were connected via its own node controller.
Note that if the NDP is connected externally via the local supervisor
port (RJ11) it uses the local supervisor port address (not NDP
port address).
The diagram below illustrates the combinations in which NDPs and local supervisor/engineering tools can be connected.
Integral NDP
option
13
# O N
A D D R E S S
PC or NDP
(connected via
supervisor port)
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
N D P
5
IQ251
Data Sheet
HARDWARE (continued)
Integral Node :If required an additional node controller (e.g. TMNH, TMNE, CNC2, PNC2, INC2, LINC/FTT) may be fitted inside
the IQ251 using the node fixing kit. KIT/NODE/IQ25x.
The fixing kit contains nylon pillars which are screwed into the 4
aluminium threaded inserts on the IQ251. The node card has 4
semi-circular cutouts that fit between the fixing screws; the screws
are then tightened to clamp the board. There is a special 24 Vdc
supply connection (labelled XNC) and a network connector (labelled
MNC). The two on-board network links must be removed to enable
the network to connect to the node.
node supply
(XNC)
network links
Note that an additional node controller will consume current from
the 24 Vdc auxiliary supply; see auxiliary supply section above
and appropriate node controller data sheet.
There is a front panel knockout for RS232 to auxiliary node, and a
circular knockout for other auxiliary node cables.
node network
connection
(MNC)
O N
A D D R E S S
COMPATIBILITY
Supervisors:
Utility software:
Controllers:
Interface:
Local Display:
94x series, 921, NDP (V2.3 or greater), 962, Viewpoint+, 915.
PowerTool, 822+/Toolbox version 6, 841 Strategy Browser (Vx), 842 Change Tracker, SET, WupDn.
It can communicate to other Trend IQ controllers using inter-controller communications.
It can be connected to Trend interface modules. Check interface module specification to ensure compatibility.
Network Display Panel.
The IQ Configuration Reference Manual Addendum covers the compatibility between different types of strategy files, and between
the IQ251 sensor logs, and supervisors and software tools.
6
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
Data Sheet
IQ251
INSTALLATION
CONNECTIONS
Supply
/230
Auxiliary Supply Output
IEC
24 Vdc at 500 mA
/24 VAC
24 Vdc 0 V
yellow
green
blue
see also external NDP below
24 Vac
0V
}
24 Vac
}
24 Vdc
earth
13
/24 VDC
# O N
yellow
green
blue
A D D R E S S
optional earthing bars
+24 V
0V
earth
24 V units have 2 part Mat-N-Loc connectors
Inputs and Outputs
Inputs (EIN module)
Local Supervisor Port
8
A I1
IN
A I2
C
IN
A I3
C
IN
A I4
C
8
A I5
IN
C
IN
A I6
C
IN
A I7
C
A I8
IN
C
IN
D I2
D I1
C
IN
C
D I3
IN
C
IN
D I4
C
IN
D I5
C
D I6
IN
C
IN
D I7
C
IN
C
D I8
RJ11
(FCC68)
IN
see also external
NDP below
C
Analogue Outputs (EAO module)
8
A O 2
O U T C
A O 1
O U T C
A O 3
O U T C
A O 4
O U T C
A O 5
O U T C
A O 6
O U T C
A O 7
O U T C
RJ11 to 9 way ‘D
type’ female cable
CABLE/EJ101442
A O 8
O U T C
Network
Digital Outputs (EDO module)
2 wire
8
N E T W O R K
O U T
C
D O 1
N o N c
C
D O 2
N o N c
D O 3
N o N c
C
C
D O 4
N o N c
C
D O 5
N o N c
C
D O 6
N o N c
C
D O 7
N o N c
C
D O 8
N o N c
C A U T IO N
H IG H V O L T A G E
M A Y B E P R E S E N T
IS O L A T E E L S E W H E R E
e a r th in g
T -
External NDP
IN
R -
T +
T -
R +
R +
R -
T +
b a r
4 wire
N E T W O R K
O U T
IN
(recommended connection)
e a r th in g
either connect signal and power single cable
T -
+
9 way 'D'
type female
T +
R -
R +
T -
T +
R -
b a r
R +
AUX supply
-
24 Vdc 0 V
Supervisor Port
+
RJ11
CABLE/EJ103952
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
7
IQ251
Data Sheet
INSTALLATION (continued)
The IQ251 Controller is installed in a cabinet or panel using 4 screws and washers. For IQ251/USA, the unit is UL rated as ‘UL916,
enclosed energy management equipment’. The procedure involves:
Mount the controller in position
Fit earthing bars (if required)
Route and tie cables
Fit I/O modules
Connect I/O
Connect power, do not power up
Connect network
Connect auxiliary supply output (if used)
Isolate and disconnect I/O
Set network address and baud rate
Link analog input channels
Fit link headers (if required)
Set digital output links (if required)
Switch On
Check controller
Check network
Configure strategy
Check operation
Backup strategy
Close panel
The installation procedure is covered in the IQ251 Installation Instructions TG103483. Sections (1.3, 2.1, 2.2, 3.1). Sections 3.3, 3.4
cover mounting in an enclosure (ENCLS) and connecting a PC. Section 4.1 covers connecting an external NDP and section 4.3 covers
resetting the IQ251.
Other installation Instructions:
Post fitting an integral NDP
Fitting link headers
Fitting an integral node
Fitting an external NDP or ENCLS/FNDP
8
KIT/ENDP/IQ251 installation instructions
LKE installation instructions
KIT/NODE/IQ25x
NDP installation instructions
TG200593
TG102487
TG200595
TG200168
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
Data Sheet
IQ251
FIELD MAINTENANCE
The IQ Controller requires virtually no routine maintenance, however it is recommended that the lithium battery be replaced every
5 years, as explained in the IQ251 Installation Instructions, TG103483, Section 4.2 Replacing the Battery.
DISPOSAL
COSHH ASSESSMENT FOR DISPOSAL OF IQ CONTROLLER. The only part affected is the lithium battery which must be disposed
of in a controlled way.
RECYCLING.
All plastic and metal parts are recyclable. The printed circuit board may be sent to any PCB recovery contractor
to recover some of the components for any metals such as gold and silver.
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
9
IQ251
Data Sheet
ORDER CODES
IQ251/[Display]/[Node]/[I/O Modules]/[Power]
[Display]
[Node]
[I/O Modules]
[Power]
blank
IQ251 with no display
blank
No node
EIN
8 analogue + 8 digital
inputs
ENDP
IQ251 with NDP on
front cover
TMNH
Node including
integral modem
EAO
8 analogue voltage
outputs
24VAC 24 Vac power supply
TMNE
Node for external
modem
EDO
8 digital outputs
24VDC 24 Vdc power supply
CNC2
Node for Trend
network
PNC2
Node for remote
printer
INC2
Node for Trend
Internetwork
LINC/FTT
Node for LonWorks
network
e.g.
230
230 Vac power supply
Only specify the modules
required (Max 8 I/O modules)
IQ251/TMNH/4EIN/3EDO/230 Specifies an IQ251 with integral modem node, 4 input modules, and 3 digital output modules
with 230 Vac supply.
Controller comes complete with mains cable and moulded IEC connector (230 V) or supply cable and MAT-N-LOC connector (24 V).
PART/LA102359K
KIT/NODE/IQ25x
ENCLS
ENCLS/FNDP
KIT/ENDP/IQ251
LKE/5V
LKE/15V
LKE/10mA
LKE/DI
CABLE/EJ101442
CABLE/EJ103952
BLT
10
Earthing bar with fixing screw and nuts and bag of earthing screws.
Kit for fixing an auxiliary node card in IQ251 or IQ250 (appropriate node cards listed above; node card must
be ordered separately).
600 mm x 600 mm x 210 mm IP55 enclosure.
600 mm x 600 mm x 210 mm IP55 enclosure with NDP fitted in front of enclosure.
Kit for fitting an integral NDP into the IQ251.
Link header to convert an analogue channel to provide 5 V, 20 mA sensor supply. Pack of 8.
Link header to convert an analogue channel to provide 15 V, 20 mA sensor supply. Pack of 8.
Link header to convert an analogue channel to provide 10 mA sensor supply (e.g. for potentiometer). Pack of 8.
Link header to convert an analogue input channel to a digital input (needs special strategy to be configured).
Pack of 8.
Adaptor cable RJ11 to 9 Way D type female for local PC connection.
Adaptor cable 9 Way D type female and 2 terminal power to RJ11 and 2 terminal power for use with NDP.
Balanced line transmitter converts IQ251 network output to a balanced signal.
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
Data Sheet
IQ251
SPECIFICATIONS
CONTROLLER
Electrical
Mechanical
CPU
CPU speed
Cycle time
Memory
:68EC020 32 bit processor
:16.67 MHz
:1 s
:512 kbyte battery-backed SRAM, and
512 kbyte flash.
Supply voltage
230
/24VAC
/24VDC
Auxiliary supply
:230 Vac, +15% -10%, 50 to 60 Hz
:24 Vac, +25% -10%, 50 to 60 Hz
:24 Vdc, +25% -10%, (24 V to 36 Vdc)
:24 Vdc ±10% 500 mA maximum
(typical) dependent on configuration
(see auxiliary supply section for details)
Consumption
:100 VA maximum
Fusing
:No replaceable fuses required. All
protection self resetting.
Battery backup
:Battery maintains time, and logged data
with mains off for at least 5 years.
Battery
:Saft LM2450, 3 V, or equivalent
Clock accuracy
:30 s per month (typical).
Network display panel :Icon driven display panel with backlit
display, for use on single or multi Lan
systems. Can be mounted in front cover,
or remotely.
Network
:20 mA serial 2 wire current loop, opto
isolated, polarity independent receiver.
Balanced line transmission can be
achieved with addition of BLT module.
Supervisor transmission
:RS232, EIA/TIA/232E, V28
Distance
supervisor
network
Cable
Belden 9182
Belden 9207
Trend
1000 m
TP/1/1/22/HF/500
(1090 yds)
(Belden 8761)
Trend
1000 m
TP/2/2/22/HF/500
(1090 yds)
(Belden 8723)
Baud rate
network
NDP
supervisor
Network addresses
Controller
Supervisor port
NDP port
Input or
Output modules
Material
Chassis
I/O modules
Cover
Protection
Weight
Connector
I/O modules
power
network
supervisor
NDP
UL
2
2
Indicator Lamps
350 m
(380 yds)
2
PWR
250 m
(270 yds)
4
WD
9k6 baud
1000 m
(1090 yds)
1000 m
(1090 yds)
19k2 baud
700 m
(765 yds)
500 m
(545 yds)
700 m
(765 yds)
500 m
(545 yds)
No. of Wires
I/O
LAN
:Selectable by switch 1k2, 9k6, or 19k2.
:9k6.
:9k6.
:Selectable by switch, 116 nodes
addressable (1,4 to 119 excluding 10)
set to be unique on Lan.
:Software selectable, 116 nodes
addressable (1, 4 to 119 excluding 10)
set to be unique on Lan.
:Software selectable, 116 nodes
addressable (1, 4 to 119 excluding 10)
set to be unique on Lan.
:550 mm (21.7”) x 440 mm (7.32”) x
175 mm (6.9”)
:Zinc plated and passivated mild steel
:Extruded aluminium with alocrom finish.
:Fire retardant moulded ABS.
:IP20
:14.5 kg (32 lbs) (fully loaded)
:2 part connector, 50 mm (1.97”) half
pitch
:IEC plug (230 V)
Mat-N-Loc (24 V)
:2 part connector with 8 screw terminals
for 0.5 to 2.5 mm2 cross section area (14
to 20 AWG) cable.
:RJ11 (FCC68), 6 pin, for Trend utility
software connected via adaptor cable
PART/10/1442.
:3 pin in line to 9 way D type connector
cable (supplied with KIT/NODE/IQ25x).
:(IQ251/USA only). The unit is UL rated
as
‘UL916,
enclosed
energy
management equipment’.
Environmental
EMC
emissions
immunity
Safety
Ambient limits
storage
operating
humidity
:15 m (16 yds)
:Dependent on cable type, see table
below.
1k2 baud
1000 m
(1090 yds)
1000 m
(1090 yds)
Dimensions
TX
RX
:EN50081-1.
:prEN50082-2.
:EN61010.
:-10 °C (14 °F) to 50 °C (122 °F)
:0 °C (32 °F) to 45 °C (113 °F)
:0 to 90 %RH non-condensing
:(green) ON when power supply is
connected.
:(red) ON if controller has a software
fault.
:(red) Flashes during normal operation.
:(green) ON if network is operating.
Flashes if prohibited controller network
address set (0, 2, 3, >119).
:(yellow) ON if current is flowing from the
network transmitter.
:(yellow) ON if current is entering the
network receiver.
:8 modules in total. Any module type may
be fitted in any position. Module types are:
EIN
8 analogue and 8 digital inputs
EAO 8 analogue outputs
EDO 8 digital outputs
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02
11
IQ251
Data Sheet
SPECIFICATIONS (continued)
I/O MODULES
Dimensions
8 Analogue Output Module (/EAO/)
:72 mm (2.83”) x 202 mm (7.95”) x 43
mm (1.69”)
:0.3 kg approx. (0.66 lbs)
Weight
Connector
Main board
Analogue outputs
Status LED
inputs/Outputs
Signal Cable
:2 part connector, 50 mm (1.97”) half
pitch
:2 part connector screw terminals for
0.5 to 2.5 mm2 cross section area (14 to
20 AWG) cable.
:Analogue Voltage, Current, Thermistor,
or Digital inputs, and Analogue outputs.
Trend TP/1/1/22/HF/500 recommended
(Belden 8761)
8 Digital Output Module (/EDO/)
Digital outputs
8 Analogue, 8 Digital Input Module (/EIN/)
Analogue inputs
V
I
T
Digital inputs
Status LED
:12 bit resolution (4096 steps). Minimum
60 dB series mode rejection at supply
frequency. Linkable for analogue current
(I), analogue voltage (V), or thermistor (T)
:0 to 10 V input resistance 200 kΩ,
accuracy 50 mV equivalent to ±0.5% of
span.
:0 to 20 mA input resistance 250 Ω 0.1%,
accuracy 0.5 % of span (i.e. 100 µA)
:Thermistor, bridge resistor 10 kΩ 0.1%,
accuracy 0.5 % of span. Bridge supply
5V.
:Volt free contact, or 24 Vdc self powered
contact. Wetting current 5 mA @ 24
Vdc, count rate 32 Hz max.
:(yellow) One per digital input. ON if input
is closed
:8 bit resolution (256 steps). 0 to 10 V with
20 mA current limit, accuracy ±50mV
equivalent to ±0.5 % span.
:(yellow) 1 per channel. Light intensity
increases with output voltage.
Status LED
Manual override
Version
firmware
boards
EIN
EAO
EDO
CPU
PSU
:Single pole change over relay, contacts
rated for 240 Vac single phase only 8A
(resistive load), 5A (inductive,
cosØ=0.4), 30 Vdc at 5A (resistive load),
and 20 Vdc at 5A (inductive load). For 24
Vdc (inductive load) reduce to 2A. Arc
suppression recommended, see Relay
Output Arc suppression Installation
Instructions, TG200208). IQ251/USA
only: Relay outputs are UL rated up to
30 V.
:(yellow) 1 per channel. ON when relay
is energised.
:Each channel is linkable for ON, OFF,
or AUTO.
This document covers
:V3 or greater
:AM101687
:AM101721
:AM102022
:AM101701
:AM102060
v3
v1.1
v1.1
v1
v2.2
Trend Control Systems Ltd reserves the right to revise this publication from time to time and make changes to the content hereof
without obligation to notify any person of such revisions or changes.
Trend Control Systems Ltd. P.O. Box 34 Horsham Sussex RH12 2YF England Tel:+44 (0)1403 211888 Fax:+44 (0)1403 241608 www.trend-controls.com
12
IQ251 Controller Data Sheet TA102315 Issue 3/A 24/7/02