Honeywell FEMA TAM Series User manual

® U.S. Registered Trademark MU2B-0375GE51 R0211A
Copyright © 2011 Honeywell Inc. • All rights reserved
Assembly and Operating
instructions
Thermostats TAM, TRM,
and TX series
Basic models Additional functions
TAM… …-205
TRM… …-206
TX… …-213
…-301
…-351
Ex-i …-513
Ex-de, Ex-t

Type code
30 MU2B-0375GE51 R0211A
Type code
Basic version Version with additional function Ex-version
ABC XXX ABC XXX-YYY Ex-ABC XXX
ABC Identification for series
XXX Identification for temperature range
YYY Identification for additional functions
Ex- Identification for Ex version

Type code
Connection housings
ABC XXX
ABC XXX-2…
Plug connection housing (200)
(Plug connection to DIN EN 175301)
ABC XXX-3…
ABC XXX-5…
Terminal connection housing
(300 or 500)
Ex- ABC XXX Ex-housing t (700)
Important notes
Thermostats are precision instruments, set and adjusted in factory. Do not open the
device or reset the varnished adjustment screw. This would alter the switching
points, and resetting in the factory would then be necessary.
MU2B-0375GE51 R0211A 31

Important safety information
32 MU2B-0375GE51 R0211A
Important safety information
Please read this before installing and commissioning!
Installation and commissioning
XThermostats may only be installed by
personnel trained in this application
area in accordance with installation
instructions and local legal require-
ments.
XThermostats always should be
installed by using suitable thermo-
wells (TAM and TX). Never dip the
sensor without pocket direct into the
medium. Before selection of a
thermowell, it is necessary to check
for material compatibility with
measured medium.
XCaution when touching the device –
risk of burns. Device can reach on
sensor side a temperature of up to
130 °C. Risk of freezing when work
with medium temperatures below
0 °C.
XIn any case, do not open wiring-box
or plug and do not remove terminal
screws before the device is de-
energized.
XThe device must be used only within
the electrical and thermal limits
specified in the data sheet.

Important safety information
MU2B-0375GE51 R0211A 33
XInductive loads can cause contact
burns or fuse the contacts. The
customer must implement preventive
measures, e.g., through the use of
suitable RC elements.
XDevices must be protected from solar
radiation and rain!
XPrevent vibrations from reaching the
thermostat, e.g., with mechanical
isolation or other vibration damping
measures.
XNever use thermostats as a climbing
aid.
XAvoid condensation water when
operating the device below 0 °C!
XHoneywell GmbH accepts no liability
for non-compliance.

Contents
34 MU2B-0375GE51 R0211A
Contents
Marking
1. Basic equipment
1.1 Technical data
1.2 Mounting and installation
1.3 Electrical wiring and factory settings
1.4 Adjustment of switching points
ABC XXX
2. Thermostats with adjustable switching differential TRMV XXX,
ABC XXX-303
3. Temperature limiter
3.1 Temperature limiter with mechanical interlock
3.2 Interlock in control cabinet
ABC XXX-205, -206
ABC XXX-305, -306
4. Thermostats with gold contacts ...-213 ABC XXX-213
5. Thermostats in intrinsic safe circuits (Ex-i) ABC XXX-513

Contents
MU2B-0375GE51 R0211A 35
6. Ex-proof thermostats (Ex-de, Ex-ti)
6.1 Technical data of Ex-proof switch-housings
6.2 Connection plan
6.3 Electrical ratings of components
6.4 Serial number
6.5 Setting of switching points
Ex- ABC XXX

1. Basic equipment
36 MU2B-0375GE51 R0211A
1. Basic equipment
Chapter 1 describes the basic equipment,
the technical data, the mounting and
electrical wiring of the thermostats.
1.1 Technical data
(not for Ex-version)
Installation
Vertical
Switch
Single-pole changeover
Switching capacity
8 (5) A, 250 V AC
Max. ambient temperature at switch
housing
70 °C
Degree of protection according to
EN 60529
Housing 2… IP54
Housing 3… IP65
Housing 5… IP65
Ex-housing 7... IP65

1. Basic equipment
1.2 Mounting and installation
Wall installation
With wall bracket H1 (included as
standard with room thermostats type
TRM). For wall installation of TX and
TAM, H1 bracket needs to be ordered
separately. This is valid for all versions
with housing 2…, 3…, 5…, and 7… (Ex).
MU2B-0375GE51 R0211A 37
Fig. 1. Wall installation 2...
XFasten holding bracket (1) horizontal-
ly on wall by means of screws and
plugs (6 mm diameter)
XFasten terminal plate (3) by means of
2 screws M4 on the reverse side of
the switching unit (do not tighten –
maintain approx. 2 mm distance
between casing and terminal plate).
XHang casing on the bracket and
clamp it with two screws M4.
The thermostats can also be fixed directly
by means of 2 screws (4 mm diameter)
on a flat surface (without wall bracket
H1).

1. Basic equipment
Wall fixing of the sensor cartridge by
means of clamping bracket H2
38 MU2B-0375GE51 R0211A
Fig. 2. Fixing the sensor cartridge
XFix clamping bracket (1) by means of
2 screws on the wall.
XPress together the angles and insert
the sensor cartridge. After releasing,
the sensor cartridge fits tightly.
Sensor mounting in containers and
pipes
For pressure-tight installation thermowells
in 3 different lengths are available.
For further accessories, see technical
data sheets.

1. Basic equipment
1.3 Electrical wiring
Plug connection (Housing 2...)
Fig. 3. Wiring
MU2B-0375GE51 R0211A 39
CAUTION
Switch off power before opening.
XRemove fixing screw
XInsert screwdriver into the split and
press downwards. The part with
terminals will move out of the
housing.
XPull connecting cable (7) through
conduit and wire contacts according
to plan.
XPlace wired contact plate (9) to
desired mounting direction
(4 directions possible) and move
mounting plate back into connector
housing. Refasten cable gland.
Caution: Not fastening cable gland
would cause loss of IP protection and
strain relieve of the cable.
XPlug Connector (9) to Pins (10) and
fix connector with fixing screw!

1. Basic equipment
Screw terminal connection
(Housing 3... and 5...)
Accessible after removing cover at screw
terminal housing.
40 MU2B-0375GE51 R0211A
CAUTION
Switch off power before opening.
XUnfasten 4 screws and remove cover.
XPull connecting cable through cable
gland and wire terminals according to
plan.
XFasten cable gland. Caution: Not
fastening cable gland would cause
loss of IP protection and strain relief
of the cable.
Factory adjustment
With falling temperature, switching occurs
at the set scale value. Switching back (as
soon as temperature begins to rise)
occurs at a value higher by the amount of
the switching differential.

1. Basic equipment
Wiring diagrams
Fig. 4. Monitor
As the temperature rises
3-1 opens, 3-2 closes
As the temperature falls
3-2 opens, 3-1 closes
Fig. 5. Maximum limiter
Additional function -205, -305
Fig. 6. Minimum limiter
Additional function -206, -306
MU2B-0375GE51 R0211A 41

1. Basic equipment
1.4 Adjustment of switching
points
Fig. 7. Adjustment of switching points
Turning to the right
lower switching point
Turning to the left
higher switching point
The grub screw (12) located above the
scale is to be slackened off approx.
2 turns before making an adjustment and
tightened up again after setting.
42 MU2B-0375GE51 R0211A

1. Basic equipment
In general adjustment procedure of
switchpoints at screw terminal housing is
similar to procedure for plug connector
housing.
Fig. 8. Screw terminal housing
CAUTION
Switch off power before opening.
After removal of the casing-cover (1), the
adjustment screw (3) and thus also the
setpoint (4) can be adjusted to the
required value by means of a screwdriver.
After adjustment of switchpoint, replace
cover and tighten 4 cover screws.
MU2B-0375GE51 R0211A 43

2. Thermostats with adjustable differential
2. Thermostats with adjustable
differential
The switching differential is changed by
turning the grub screw (2) inside the
setting screw (1). The switching point is
not changed by adjusting the differential,
only the reset point is shifted by the
amount of the differential. One 360°-
rotation of the differential screw varies the
switching differential by approx. 25 % of
the total differential range.
44 MU2B-0375GE51 R0211A
Fig. 9. Switching differential
CAUTION
With TRM...-303, there is a risk of
touching the mains power. Therefore,
switch off power.
Turning to the right
Greater switching differential.
Turning to the left
Smaller switching differential.
Caution
Grub screw without end-stop to the left.
Drive out only max. flush to the surface of
the adjustment screw, otherwise risk of
loosing the screw.
1 2

3. Temperature limiter
MU2B-0375GE51 R0211A 45
3. Temperature limiter
3.1 Temperature limiter with
mechanical interlock
Max. temperature limitation (...-205)
When the temperature exceeds the value
set on the scale, the microswitch switches
over and remains in this position. The
catch can be released by pressing in the
unlocking button (marked on the scale
side of the switching device by a red dot).
The limiter can not be unlocked until the
temperature has decreased by approx.
8-10 K.
Min. temperature limitation (…-206)
When temperature falls below the value
set on the scale, the microswitch switches
over and remains in this position. The
catch can be released by pressing the
unlocking button (marked on the scale
side of the switching device by a red dot).
The limiter cannot be unlocked until the
temperature has increased by approx.
8-10 K.

3. Temperature limiter
46 MU2B-0375GE51 R0211A
3.2 Interlock in control cabinet
A thermostat can act as a temperature
limiter if interlock function is provided by
electrical circuitry. Below are two
examples for interlock circuitry.
In any case, valid standards (e.g.,
DIN EN 50156 / VDE 0116-1 and valid
local standards) must be observed for
design of electrical interlocking circuitry.

3. Temperature limiter
Maximum temperature limitation
Fig. 10. Max. temperature limitation
TW = Thermostat
T1 = STOP
T2 = START
Minimum temperature limitation
Fig. 11. Min. temperature limitation
S = Signal (if required)
K1 = Relais with catch contact
SC = Safecty circuit
MU2B-0375GE51 R0211A 47

4. Thermostats with gold-plated contacts ...-213
48 MU2B-0375GE51 R0211A
4. Thermostats with gold-
plated contacts ...-213
Gold-plated contacts are used exclusively
in the low-voltage range in order to keep
the transit resistance at the contacts low
during lifetime.
4.1 Technical data as per 1.1
Switching capacity max. 24 V DC
max. 100 mA
min. 5 V DC
min. 2 mA
At higher voltages and currents, the gold
layer on the contacts will be damaged.
All other data correspond to the basic
equipment.