Honeywell Touchpoint 4 Manual

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)11
Follow the advice of:
• experts having specialist knowledge of gas detection and control systems 
• experts having knowledge of the process plant system and equipment involved
• safety and engineering personnel
Always record the location of the detectors connected to the controller.
Dimensions
Enclosure
Note Diagram not to scale 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)12
Rear Panel Detail
Mounting Bracket
Mounting
Hooks
Thickness = 5.3 mm (0.2”) max.
172.0 mm (6.8”)
86.0 mm
(3.4”)
228.0 mm
(9.0”)
198.0 mm
(7.8”)
268.0 mm (10.6”)
12.0 mm (0.5”)
Note Diagram not to scale. 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)13
Mounting
Touchpoint 4 is supplied with a mounting bracket that fits onto a suitable wall. The controller is
then hooked onto the bracket. The previous diagrams show dimensions for the enclosure and the
bracket. Fit the bracket to a flat, firm surface, e.g. wall, suitable for the controller’s size and weight.
1 Mark out and drill holes for the mounting bracket screws.
Use the mounting bracket as a template for the position of the holes. Use 4 off M3.5 x25
screws
2 Fix the bracket securely to the wall.
When mounting Touchpoint 4 ensure the screws do not catch on the back of the controller
when it is fitted onto the bracket.
3 With the bracket secure, locate and then lower Touchpoint 4 onto it.
Ensure the two top and single bottom hooks on the back of the unit engage properly in the
mounting bracket slots.
Controller Components
z 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)14
This procedure describes how to access the components inside the controller.
1 Loosen the single screw securing the Terminal Module Access Panel.
2 Push down on the finger grips located at the top of the panel.
See previous diagram.
3 Slide the panel down to release it. 
4 Pull the panel outward.
Pull it until the door is approximately at a right-angle to the enclosure.
5 Push the panel inward toward the enclosure.
This locks it in the open position and provides two-handed access to the Terminal
Modules. 
Common Module 
Channel Module
On/Off Switch
Fuse
20-wire Terminal
Block
3-wire Terminal BlockTerminal Plastic Cover
Terminal Module
8-wire Terminal
Block
Terminal Module
Terminal Plastic Cover
3-wire Terminal Block 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)15
To access the connections on the terminal blocks, slide the clear plastic cover fitted over
them off.
The plastic cover can be completely removed if required. 
6 After carrying out the procedures subsequently described close and secure the 
Terminal Module Access Panel with the screw.
Caution Always ensure the Terminal Module Access Panel is replaced/
refitted after work is complete.
Power
Touchpoint 4 has an auto sensing power supply capable of operating between 85 and 265 Vac, 
50/60Hz mains supply, and/or 19 to 30 Vdc. 
Honeywell Analytics recommend that the power to the controller is sourced from a locally fused
circuit. This should have an isolation facility for maintenance purposes. 
The table on page 19 and the terminal block diagram following the table show the wiring for
power to Touchpoint 4. 
Maximum power requirement for worst case detector configuration and relays activated is
160Wac and/or 63Wdc.
Touchpoint 4 can accept signals from three types of detector. The table summarizes the types
of detector compatible with the controller and the maximum power required.
Cabling
Touchpoint4 is designed for use in safe areas. Electrical installation should follow national
guidelines using suitably approved cable and glands (M20 or 3/4NPT) or conduit (3/4NPT).
Approved cable glands must accommodate a 360 degree termination of the EMI shield.
Screened 0.5mm² (20AWG) to 2.5mm² (14AWG) cross sectional area cable should be used
where appropriate to minimize unwanted effects from RF sources. 1.0 mm² is preferred. Wires
can be either solid or stranded type. Ensure the cable gland is installed correctly and fully
tightened.  The enclosure has 11 knockouts in the base sized for both M20 and 3/4 in. NPT
fittings.
When running cabling to the unit consider conduit/cable weights to avoid any stress to the unit.
The following diagrams show examples of how to earth-bond Steel Wired Armored (SWA) cable
at enclosures. The same principles apply to conduit installations. These bonding techniques
provide good RFI/EMC performance.
To calculate the maximum cable run length from the controller to the detector see page 27.
For RS485 signal wiring/protocol contact Honeywell Analytics for further details. Type of detector Maximum Power Recommended Detector
2-wire 4-20 mA sink 500 mA (19 to 30 Vdc) Sensepoint Toxic and Oxygen
3-wire 4-20 mA source  500 mA (19 to 30 Vdc) Sensepoint Plus and Sensepoint Pro
3-wire mV bridge 2.9-3.5V, 200 mA, 0.7W (max) Sensepoint Flammable 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)16
Wiring
Caution An earth point is provided inside the controller. Ensure that all 
detector screens/armor are grounded at a single earth star point at 
the controller or detector — BUT NOT BOTH — to prevent false 
alarms due to earth loops.
All electrical wiring connections are made via the Terminal Modules. 
Wire size from 0.5 to 2.5 mm
2 (20 AWG to 14 AWG). 1.0 mm2 is preferred. 
Star Ground/Earth PointNeutral
Live
Earth
+ve
Signal
-ve AC Supply
Gas Detector 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)17
Always use suitable wiring techniques and crimps when terminating cable cores, especially if
running two cores to a single terminal. 
Common controller connections are made at the Terminal Module for the Common Module.
Connections for each detector are made at the Terminal Module for each Channel Module. 
Common Module Wiring
Signals and DC power are connected to a 20-wire terminal block, and mains power is connected
via a 3-wire terminal block on the Terminal Module, 
Terminal Module 
The following table lists the terminals and their functions and specifications. 
The next diagram shows the 20-wire terminal block layout with terminal identifiers.
    A
1NC
FNC 1C
1NO 
2NC
2C
2NO
FC
FNO
DC+
 B
D+
D-
RST1
RST2
A1
A2
F
VIS
GND
DC-4
5
6
7
8
9
10
11
12
1314
15
16
17
18
19
20
21
22
23 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)18
The following diagram shows the 3-wire mains terminal block layout with terminal identifiers. Id. Name FunctionInput/
OutputSpecification
4N/O ContactNO
Alarm Relay 1 Output 240 Vac, 3A max. 5CommonC
6N/C ContactNC
7N/O ContactNO
Alarm Relay 2 Output 240 Vac, 3A max. 8CommonC
9N/C ContactNC
10N/O ContactNO
Fault Relay Output 240 Vac, 3A max. 11CommonC
12N/C ContactNC
13DC Power+DCDC supply/
battery back-upInput19~30 Vdc, 
63Wdc max
14
RS485D+RS485
Communication
LinkInput/
Output-7 to12V
15 D-
16
Remote ResetR1
Remote 
ResetInput 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)19
 
The table lists the mains terminals and their functions and specification.
RS485 connection
This link is for serial connection by RS485 link to other control equipment. The link settings can
be configured for address and data rate, 
see page 46. For signal wiring contact 
Honeywell Analytics for further details. For the communication protocol manual, please visit our
website at www.honeywellanalytics.com or contact one of our representatives.
Remote reset
These terminals are to connect an external reset button to Touchpoint 4. The button needs to
operate in the same way as the Cancel button on the Display Module, i.e. normally open,
momentary close to activate. 1 mm
2 shielded cable recommended with a maximum cable length
to the remote reset switch of 500 m (1640 ft). 
Dedicated audio/visual alarm driveId. Name FunctionInput/
OutputSpecification
1LiveL
Power Supply Input85 to 265 Vac, 
50/60 Hz 2NeutralN
3Earth/GroundE
12 3
LNE
A1 18
A2 19
F20
VIS 21
+ 24VDC 22
D edicated Audible/Visual  Alarm Drive
+ 24VDC
0VDC
NO
NO
NO
NO
1.5 AMP
S2
+ VES3 + VE
-VE
Audible
Alarm
Visual
Alarm
(Red Flasher)
To Next
Unit Maximum Supply
= 3 x 450mA
= 1350mA @ 24VDC
Common Module
S1
AF
Max. Supply = 3 x 450 mA
= 1350 mA @ 24 Vdc
To Next Unit
 24 Vdc
Common Module
S3
S2
S1
VIS 
						

							   Installation
TP4MAN Issue 3 Apr 06 (MAN0631)20
Four audio/visual signals are output in addition to the common relays. They are for connection
to remote audio/visual devices. The outputs are A1, A2, F with a common master alarm. 
Channel Module Wiring
Detector power, signal, relay and repeated isolated 4-20 mA connections are made via 8-wire
and 3-wire terminal blocks on each Terminal Module
The following diagram shows the 8-wire terminal block layout with terminal identifiers
 
The table lists the terminals and their functions and specifications.
Id. Name FunctionInput/
OutputSpecification
4Alarm Relay 1 N/O 
ContactNO
Alarm Level 1Output 240 Vac, 3A max.
5Alarm Relay 1 CommonCOutput 240 Vac, 3A max.
6Alarm Relay 1 N/C 
ContactNCOutput 240 Vac, 3A max.
7Isolated signal output+I4-20 mA 
signalOutput 0~22 mA
8Alarm Relay 2 N/O 
ContactNO
Alarm Level 2Output 240 Vac, 3A max.
9Alarm Relay 2 CommonCOutput 240 Vac, 3A max.
10Alarm Relay 2 N/C 
ContactNCOutput 240 Vac, 3A max.
11Isolated signal output–I4-20 mA 
signal Output 0~22 mA
    
1NC
1C
1NO 
I+
A  
2NC
2C
2NO
I-
B
4
5
6
78
9
10
114
5
6
74
5
6
7