ZIEHL TR660IP User manual

ZIEHL industrie –elektronik GmbH + Co KG
Daimlerstr.13, 74523 Schwäbisch Hall, Germany
+ 49 791 504-0, [e-mail], www.ziehl.de
Temperature Relays and MINIKA® Mains Monitoring Digital Panelmeters MINIPAN® Switching Relays and Controls Measuring Transducers Grid- and Plant Protection
Operating Manual TR660IP
updated: 2022-11-29 / sm
from Firmware: 0-06
For more information and help about this product please scan the QR-Code or
choose the following link: TR660IP
Operating manual, Quick guide, Datasheet, Connection diagram, CAD Data
Firmwareupdates, FAQ, Videos about installation and settings, Certificates
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- Pt100, Pt1000, PTC temperature relay with integrated webserver and display

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Table of contents
1General Notes......................................................................................................................................... 3
2Display and controls .............................................................................................................................. 4
3Pre-sets................................................................................................................................................... 4
4Application and short description......................................................................................................... 4
5Overview of functions............................................................................................................................ 5
6Connecting diagram............................................................................................................................... 6
6.1 TR660IP Analog ............................................................................................................................ 6
6.2 TR660IP RS485 ............................................................................................................................ 6
6.3 Ethernet......................................................................................................................................... 6
7Important Information ............................................................................................................................ 7
8Installation .............................................................................................................................................. 7
9Commissioning....................................................................................................................................... 8
9.1 Notes on operation ........................................................................................................................ 8
9.2 Switch on device / select language and date ................................................................................. 8
9.3 Device on the network ................................................................................................................... 8
9.3.1 Find the device in the network................................................................................................ 8
9.3.2 Call via web browser............................................................................................................... 9
9.4 Wire line adjustment...................................................................................................................... 9
10 Operation ................................................................................................................................................ 9
10.1 Program selection.......................................................................................................................... 9
10.2 Description of the parameters...................................................................................................... 11
10.3 Code lock / code reset................................................................................................................. 13
10.4 Description of the display pages.................................................................................................. 13
10.4.1 Measured value page (1/3)................................................................................................... 13
10.4.2 Sensor to alarm assignment (2/3)......................................................................................... 13
10.4.3 Info page (3/3)...................................................................................................................... 14
10.5 Special functions.......................................................................................................................... 14
10.5.1 2 of x .................................................................................................................................... 14
10.5.2 Rate of change of temperature (ROCOT)............................................................................. 14
10.5.3 Cyclic relay test .................................................................................................................... 14
10.5.4 Differential temperatures ...................................................................................................... 14
10.6 Simulation.................................................................................................................................... 15
10.7 Firmware update.......................................................................................................................... 15
10.8 Alarm counter.............................................................................................................................. 15
10.9 Logging.....................................................................................Fehler! Textmarke nicht definiert.
10.9.1 Intervall-Logging................................................................Fehler! Textmarke nicht definiert.
10.9.2 Event-Logging ...................................................................Fehler! Textmarke nicht definiert.
11 Web interface.........................................................................................Fehler! Textmarke nicht definiert.
11.1 Home........................................................................................Fehler! Textmarke nicht definiert.
11.1.1 Simulation..........................................................................Fehler! Textmarke nicht definiert.
11.2 Configuration............................................................................Fehler! Textmarke nicht definiert.
11.3 System .....................................................................................Fehler! Textmarke nicht definiert.
11.4 Network....................................................................................Fehler! Textmarke nicht definiert.

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11.5 User..........................................................................................Fehler! Textmarke nicht definiert.
11.5.1 User, admin forgot your password.....................................Fehler! Textmarke nicht definiert.
11.6 Logging.....................................................................................Fehler! Textmarke nicht definiert.
11.7 Counter.....................................................................................Fehler! Textmarke nicht definiert.
11.8 Temperature statistic................................................................................................................... 17
11.9 Program update........................................................................................................................... 17
11.10 Modbus.................................................................................................................................... 17
11.11 Logging.................................................................................................................................... 17
11.11.1 Intervall-Logging................................................................................................................ 17
11.11.2 Event-Logging................................................................................................................... 17
12 Web interface........................................................................................................................................ 18
12.1 Home........................................................................................................................................... 18
12.1.1 Simulation............................................................................................................................. 18
12.2 Configuration............................................................................................................................... 18
12.3 System ........................................................................................................................................ 18
12.4 Network....................................................................................................................................... 19
12.5 User............................................................................................................................................. 19
12.5.1 User, admin forgot your password........................................................................................ 19
12.6 Logging........................................................................................................................................ 19
12.7 Counter........................................................................................................................................ 19
13 Error search.......................................................................................................................................... 19
14 Disposal ................................................................................................................................................ 20
15 Technical data ...................................................................................................................................... 21
16 Housing V8............................................................................................................................................ 23
17 Factory settings of the programs........................................................................................................ 24
1 General Notes
Compliance with the following instructions is mandatory to ensure the functionality and safety of the
product. If the following instructions given especially but not limited for general safety, transport,
storage, mounting, operating conditions, commissioning and disposal / recycling are not observed,
the product may not operate safely and may cause a hazard to the life and limb of users and third
parties.
Deviations from the following requirements may therefore lead both to the loss of the statutory
material defect liability rights and to the liability of the buyer for the product that has become unsafe
due to the deviation from the specifications.

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2 Display and controls
1. Display
•K1 … K7
- white font => relay released
- yellow font => relay energized
•coloured bar below the relay name
- bar increasing => delay alarm on active
- bar decreasing => delay alarm off active
- bar flashes red => manual intervention necessary, alarm can be reset (push button
up, or external switch on Y1 + Y2)
- “M” => relay is in manual mode (depending on the colour of the relay
name; relay energized (yellow) relay dropped (white))
- “T” => cyclic relay test active
•When measured value is highlighted in orange
- sensor value is above the limit value
•ERR
- There is at least 1 error (detailed description of the active error is shown on page 4)
2. Operating element –joystick button
3. LED Ethernet connectivity
3 Pre-sets
The pre-set programs cover most applications. The required program can easily be selected via the menu
(push button down >2s -> programs). Alternatively, the program can be selected via the web server (page
configuration).
4 Application and short description
The TR660IP is used particularly advantageous wherever several Pt100, Pt1000 sensors or PTC thermistors
are to be evaluated simultaneously:
•Motors or generators, also with simultaneous monitoring of bearing or e.g. exhaust
temperatures
•Transformers, also with additional core temperature monitoring
•Machinery and equipment
Switchgear type TR660IP monitor up to 6 sensors simultaneously. The user can assign several limit values to
the 7 output relays almost arbitrarily. The assignment sensor / relay is very variable programable. Basic
settings such as the monitoring of 3 sensors to the same limit with common message (e.g. when used on
motors or transformers) can be easily selected via the default configurations.
1
2
3

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5 Overview of functions
•All measured values can be read at once
•Easy operation with joystick button
•Measuring and monitoring range Pt100, Pt1000 -199,9 … +800,0°C, PTC
•6x sensor inputs (Pt100, Pt1000, PTC), optionally 2 or 3 –wire technology
•7x relay outputs (1 changeover each)
oAlarm K1 (11/12/14) … K7 (71/72/74)
•Fault message for sensor break, short circuit and device fault freely configurable on each of
the 7 relays
•Modbus TCP
•Wide range power supply AC / DC 24 –270V
•Integrated web server for the measurement query, configuration and for firmware updates
•4x analogue output (2x voltage, 2x current) –TR660IP Analog only
•RS485 interface (Modbus RTU) –TR660IP RS485 only
Functions / settings
Alarm:
•Each sensor can be assigned to each alarm (relay K1 … K7).
oHowever, only equivalent sensor types can be assigned to the same alarm. That
means Pt100 and Pt1000 sensors can be combined, but not PTC at the same time.
oCaution! The first parameterized sensor specifies the alarm type (Pt sensor or PTC).
•For each alarm, sensor fault and device fault can be parameterized
•Free adjustable delay times for “Alarm on” and “Alarm off”
•2 of x
oThe function “2 of x” triggers the alarm only if at least 2 of the sensors parameterized
for this alarm fulfil the alarm conditions
oIf only 1 sensor assigned to an alarm, this function cannot be activated.
•Rate of change of temperature (ROCOT)
oROCOT slope (°C / s)
▪If the temperature increase between the measured values is higher than the set
slope, the respective alarm switches on. Even if the set “alarm on” temperature
has not yet been reached.
oROCOT time
▪If the calculated value ((slope * time) + current measured value) exceeds the set
switch-off temperature, the alarm switches on.
oROCOT switch back conditions
▪Actual measured value must be less than “alarm off” and slope must be
negative.
•Locked alarm
oEach alarm can be set to “locked” yes or no
•Relay function
oOn at alarm
oOff at alarm
oManually on (if a relay is set to “manual”, it permanently retains this state)
oManually off
Cyclic relay test
The cyclic relay test is freely adjustable for each relay. It is used on engines for example, to activate fans or
pumps in a fixed cycle for the set time, so that they are moved regularly.

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6 Connecting diagram
6.1 TR660IP Analog
6.2 TR660IP RS485
CAUTION! For the last device in the RS485 bus, the bridges „1)“ must be screwed in from D1 to D1‘ and from
D0 to D0‘. Wire bridges are not included.
6.3 Ethernet
Ethernet socket for network cable.

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7 Important Information
DANGER!
Hazardous voltage!
Will cause death or serious injury. Turn off and lock out all power
supplying this device before working on this device.
If the temperature sensors are installed in transformers or motors with a voltage >
300V, they must have a double or reinforced insulation suitable for the measurement.
All wires (sensors, reset, ethernet) that are >30m must be shielded. The shield must
be earthed on the side of the device
Reference to isolation of input and output as well as relay contacts: Unless otherwise
noted, the devices have basic insulation accordingly the measurement insulation
voltage of the device. When higher isolation or safe separation is required for the
application, this must be ensured due to additional measures.
Attention!
The temperature sensors are connected to terminals 1T1, 1T2, 1T3 etc.
These pluggable contacts have a special contact material and may only be used for
connecting the sensors.
To use the equipment flawless and safe, transport and store properly, install and start professionally and
operate as directed.
Only let persons work with the equipment who are familiar with installation, start and use and who have
appropriate qualification corresponding to their function. They must observe the contents of the instructions
manual, the information which are written on the equipment and the relevant security instructions for the
setting up and the use of electrical units.
The equipment is built according to DIN / EN and checked and leave the plant according to security in
perfect condition. If, in any case the information in the instructions manual is not sufficient, please contact
our company or the responsible representative.
To maintain this condition, you must observe the safety instructions in this instruction manual titled
“Important Information”. Failure to follow the safety instructions may result in death, personal injury, or
property damage to the equipment itself and other equipment and facilities.
Instead of the industrial norms and regulations written in this instruction manual valid for Europe, you must
observe out of their geographical scope the valid and relevant regulations of the corresponding country.
8 Installation
•mount on 35 mm mounting rail according to EN 60715
•wall-mount with 3 x screws M4
•connecting wires refer to the connection plan to prevent miss-operation and malfunction.
A circuit-breaker or switch must be situated within easy reach of the
unit and fused. Installation excess current protection should be ≤ 10 A.

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Observe the maximum permissible temperature when installing in the control cabinet. Leave enough space
for other equipment or heat sources. If cooling becomes difficult, e.g. by close proximity of devices with
increased surface temperature or obstruction of the cooling air flow, the permissible ambient temperature
is reduced.
9 Commissioning
9.1 Notes on operation
↑ Push Button up…
Display page 1/3: min/max
values
Menu: scroll up
Parameter: increase value
Locked alarm: >2s = reset
← Push Button left…
Display page: previous display
page
Menu: back
Parameter: navigate tot he left
→ Push Button right…
Display page: next display page
Menu: call submenu / parameter
Parameter: navigate to the right
↓ Push Button down…
Display page: Press and hold
for 2s, menu is displayed
Menu: scroll down
Parameter: decrease value
9.2 Switch on device / select language and date
When you first start the device, the language selection appears. After the desired language has been
selected, the current date and time setting will appear. These settings are required for the correct operation of
the alarm counter. If the date has not been set, the alarm counter will show the year 1970. After these settings
have been made, the monitoring starts. The settings for the language, date and time can be changed at any
time in the menu (settings -> language / date / time) or via web browser.
9.3 Device on the network
If the TR660IP is connected to a network via Ethernet, the measured values and parameterization can be
made via the web browser on a computer. Basic knowledge of network technology is required for the
configuration.
9.3.1 Find the device in the network
Network with DHCP server
After connecting to the network, the device automatically receives an IP address.
Query IP address on the device:
•In menu mode, select the menu item “network” or on the 3rd display page
•Settings for the network parameters DHCP, IP address and subnet mask can be viewed and
changed.
Set network without DHCP server / manual IP address
The relevant network parameters can be set and changed directly on the device:
•In menu mode, select the menu item “network”
•Settings for the network parameters:
oSet DHCP to “off”
oSet the IP address and subnet mask
Connection
Start the web browser on computer and insert the IP address in the address bar.

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9.3.2 Call via web browser
After calling the IP address, the device logs in the web browser.
9.4 Wire line adjustment
To compensate the line resistance short circuit the wires nearby the sensor, measure resistance and enter
this value for line resistance. With 2-wire connection and a common line for all signals, all sensor measuring
currents will be added on the common line. Thus the value of the compensation line resistance RK must be
calculated as follows:
RK = (n+1) x RL/2 (RL = resistance of two wires, n = number of sensors)
10 Operation
10.1 Program selection
Depending on the application, a program with the appropriate default settings can be loaded on the TR660IP.
Settings procedure on the device: push button down >2s -> programs -> select application area -> select
program.
Setting procedure via web browser: page “configuration” -> select suitable program from dropdown menu ->
by clicking on “save” the selected program is loaded.
Pr
Description
sensors
alarms
1.00
Trafo save
3x Pt100
same settings as Pr2 TR250
1T = Pt100
2T = Pt100
3T = Pt100
4T = off
5T = off
6T = off
K1 = fan with cyclic test
K2 = pre-alarm
K3 = tripping
K4 = sensor-/ device error
1.01
Trafo save
1x Pt100, 2x PTC
same settings as Pr3 TR250
1T = Pt100
2T = PTC
3T = PTC
4T = off
5T = off
6T = off
K1 = fan with cyclic test
K2 = pre-alarm
K3 = tripping
K4 = sensor-/ device error
1.02
Trafo save
4x Pt100
same settings as Pr3 TR440
1T = Pt100
2T = Pt100
3T = Pt100
4T = Pt100
5T = off
6T = off
K1 = fan with cyclic test
K2 = pre-alarm + error
K3 = tripping winding
K4 = tripping core
1.03
Trafo save
4x Pt100
same settings as Pr4 TR440
1T = Pt100
2T = Pt100
3T = Pt100
4T = Pt100
5T = off
6T = off
K1 = core
K2 = pre-alarm
K3 = tripping winding
K4 = sensor-/ device error
1.04
Trafo save
4x PTC
same settings as Pr1
MSF220VL
1T = PTC
2T = PTC
3T = PTC
4T = PTC
5T = off
6T = off
K1 = fan with cyclic test
K2 = pre-alarm + error
K3 = tripping winding
K4 = tripping core
1.05
Trafo save
3x PTC
same settings as Pr2
MSF220VL
1T = PTC
2T = PTC
3T = PTC
4T = off
5T = off
6T = off
K1 = pre-alarm
K2 = tripping winding
K3 = tripping core
K4 = sensor-/ device error
1.06
Trafo save
3x PTC
same settings as Pr3
MSF220VL
1T = PTC
2T = PTC
3T = PTC
4T = off
K1 = fan with cyclic test
K2 = pre-alarm
K3 = tripping winding
K4 = sensor-/ device error

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5T = off
6T = off
2.00
*)
Motor save
3x Pt100
same settings as Pr1 TR250
1T = Pt100
2T = Pt100
3T = Pt100
4T = off
5T = off
6T = off
K1 = pre-alarm
K2 = tripping
K3 = sensor-/ device error
K4 = not used
3.00
other…
6x Pt100
Single allocation
1T = Pt100
2T = Pt100
3T = Pt100
4T = Pt100
5T = Pt100
6T = Pt100
K1 = sensor 1T
K2 = sensor 2T
K3 = sensor 3T
K4 = sensor 4T
K5 = sensor 5T
K6 = sensor 6T
K7 = sensor-/ device error
3.01
other…
6x PTC
Single allocation
1T = PTC
2T = PTC
3T = PTC
4T = PTC
5T = PTC
6T = PTC
K1 = sensor 1T
K2 = sensor 2T
K3 = sensor 3T
K4 = sensor 4T
K5 = sensor 5T
K6 = sensor 6T
K7 = sensor-/ device error
3.02
other…
6x Pt100
1T = Pt100
2T = Pt100
3T = Pt100
4T = Pt100
5T = Pt100
6T = Pt100
K1 = sensor 1T, 2T, 3T
K2 = sensor 1T, 2T, 3T
K3 = sensor 4T, 5T
K4 = sensor 4T, 5T
K5 = sensor 5T
K6 = sensor 6T
K7 = sensor-/ device error
Tip: When a program is changed, all parameters are reset to “Factory setting” of the selected program. The
network settings are retained after a program change. Do not change the parameters until you have
selected the correct program.
*) default setting

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10.2 Description of the parameters
menu
parameter
explanation
setting
program
Preset programs for
the areas:
1. Trafo-safety,
2. Motor-safety,
3. others…
Load predefined programs for fast and
comfortable setting of the TR660IP
-
sensors
1T … 6T
type
Setting the respectively connected sensor
type
off,
Pt100,
Pt1000,
PTC
Line-resistance
Line-resistance between device and
sensor. Setting in ohms, or as 3-wire with
automatic compensation of cable
resistance.
3- wire,
0,0 … 100,0 Ω
Alarm
K1 … K7
Sensors
Assignment of which sensors acts on this
alarm.
1T … 6T
2 of x
If this function is on, 2 of the assigned
sensors must meet the alarm conditions to
trigger the alarm.
Function can only be activated if 2
sensors are assigned to this alarm.
on,
off
alarm on
Temperature value at which the alarm is
triggered.
If a PTC is assigned to the alarm, fixed
switch-off values for PTC thermistors are
used.
-199,9 … 800,0 °C
alarm off
Temperature value at which the alarm is
switches back.
If a PTC is assigned to the alarm, fixed
reset values for PTC thermistors are used.
-199,9 … 800,0 °C
Delay alarm on
Delay time between reaching the alarm on
value and switching the relay.
00:00 … 59:59
mm:ss
Delay alarm off
Delay time between reaching the alarm off
value and switching the relay.
00:00 … 59:59
mm:ss
Relay function
Function how the relay should behave in
case of an alarm
On at alarm,
off at alarm,
manually on,
manually off
Alarm locked
If the function is activated, the alarm must
be switched back manually on the device,
via the web browser or via an external
switch on Y1 + Y2.
on,
off
Sensor error
Selection of sensors for which the relay
issues a fault message in the event of a
sensor error.
1T … 6T
Device error
Activation to report a device error with this
relay.
on,
off
ROCOT
Function for switching off at rapid
temperature rise. (see ROCOT)
off,
°C/s,
time
ROCOT [°C/s]
Parameterization of the line slope
between two measured values.
0,1 … 10,0 °C/s
ROCOT [Zeit]
Setting the calculation time for the
ROCOT time shutdown
00:10 … 20:00
mm:ss
Cyclic test
K1 … K7
Cyclic test
Activation of the cyclic relay test
on,
off
Delay on
Duration after which time the cyclic test is
repeated
00-01 … 90-00
dd-hh

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Time on
Duration for which the test is active
00:01 … 23:59
hh:mm
Analog-
output
(TR660IP
Analog only)
OUT 1 voltage
range
0 … 10V
2 … 10V
Sensors that act on this analogue output
1T … 6T
Temperature output
Min. temperature,
max. temperature
Zero
-199,9 … 800,0 °C
Fullscale
-199,9 … 800,0 °C
OUT 1 current
range
0 … 20mA
4 … 20mA
Sensors that act on this analogue output
1T … 6T
Temperature output
Min. temperature,
max. temperature
Zero
-199,9 … 800,0 °C
Fullscale
-199,9 … 800,0 °C
OUT 2 voltage
range
0 … 10V
2 … 10V
Sensors that act on this analogue output
1T … 6T
Temperature output
Min. temperature,
max. temperature
Zero
-199,9 … 800,0 °C
Fullscale
-199,9 … 800,0 °C
OUT 2 current
range
0 … 20mA
4 … 20mA
Sensors that act on this analogue output
1T … 6T
Temperature output
Min. temperature,
max. temperature
Zero
-199,9 … 800,0 °C
Fullscale
-199,9 … 800,0 °C
RS485 –
Modbus
(TR660IP
RS485 only)
BUS address
Bus address of the TR660IP
001 … 247
Baud rate
Communication speed
4800,
9600,
19200,
57600
Parity
Parity bit
No, odd, even
Stop Bits
Number of stop bits
1 … 2
Network
DHCP
Dynamic Host Configuration Protocol
(DHCP)
The device gets its IP address from the
server
on,
off
IP-address
Manual setting of the IP address in the
network
Subnet mask
Manual setting of the subnet mask
Settings
Language
Setting of the language of the display
German,
English
Date
Setting the current date
time
Setting the current time
Display interval
Duration to update the display
0,1 … 2,0 s
Brightness
Display brightness
20 … 100%
Dimming time
Duration until the display brightness is
reduced
00:10 … 59:59
mm:ss
Factory settings
Load the parameters of the current active
program
no,
yes
Code protection
Code protection so that the settings can
be protected
Factory setting: 504
on,
off
Simulation
Sensors
Simulation of a single sensor value
Relay
Simulation of a single relay state

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10.3 Code lock / code reset
The device can be protected with the code lock against unauthorized changes to the device (via joystick
button) (menu -> settings -> code lock). A pin code is used for this (factory setting: 504).
Reset pin code / disable code lock,
On the device:
•Switch off the supply voltage
•Push the joystick button up (and keep it pressed)
•Switch on the supply voltage (keep the button pressed)
•After approx. 4s, the reset menu appears, select the code lock and push the button to the
right
•Code lock is off, pin code is reset to = 504
Via web interface:
•Open the page system, deactivate code lock and save it with a push on the save button.
10.4 Description of the display pages
10.4.1 Measured value page (1/3)
- Measurements of all 6 sensors at a glance
- Sensor names (7 characters) can be set via web interface
- If a measured value triggers an alarm, it receives a coloured
background
- Pt100, Pt1000 sensors can be recognized by the unit „°C“
- PTC thermistors can be recognized by the unit „kΩ“
- Is one of the following signs used instead of the measured value:
o„---“ is displayed, the sensor is deactivated
o„>>>“ or „<<<“ is displayed, the current measured value is larger
or smaller than the measuring range
- Joystick button
oPush short upwards => display page for min. / max. values
oIn the case of a backshift ready locked alarm, push the button 2s
upwards to reset the alarm.
10.4.2 Sensor to alarm assignment (2/3)
- Tabular assignment of the sensors to the alarms
X (white)=> sensor acts on alarm,
X (orange) => sensor has exceeded limit,
R (red) => sensor triggered alarm by the ROCOT function,
2 (orange) => two sensors triggered alarm by the function „2 of x“
E (red) => sensor error (short circuit or sensor break)
- Alarm state of the relays can be seen
(Kx (white) => relay dropped, Kx (yellow) => relay energized)
- Set alarm limit
Info
Firmware version
Display of the current installed firmware
version
Serial number
Display the serial number
Operating hours
Operating hours of the device
Comment
Comment of the customer (setting via web
browser only)
Counter
alarm counter
Alarm counter for each alarm
last 20 alarms
statistic 1
Sensor statistic (resettable)
statistic complete
Sensor statistic (not resettable)
reset
Deleting the alarm counter and sensor
statistic 1

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10.4.3 Info page (3/3)
10.4.3.1 TR660IP Analog
- Currently installed firmware version
- Currently selected program
- Reset input 0 = open, 1 = closed
- Current IP-address of the device
- Actual voltage- / current values of the analogue outputs
10.4.3.2 TR660IP RS485
- Currently installed firmware version
- Currently selected program
- Reset input 0 = open, 1 = closed
- Current IP-address of the device
- Activity on the RS485 bus (yellow dot flickering)
10.5 Special functions
10.5.1 2 of x
For each alarm the function “2 of x” can be activated. That is at least two of the sensors associated with the
alarm must meet the conditions for the alarm to trigger the alarm.
- To activate the function, there must be min. two sensors parametrised for the desired
alarm.
- Sensor errors are ignored. If only 2 sensors are assigned to a “2 of x” alarm and one of
these sensors has a sensor error (short-circuit or interruption), it is no longer possible
to trigger an alarm. In this case, monitor the sensors for errors on another alarm.
10.5.2 Rate of change of temperature (ROCOT)
The ROCOT function sets a new average every 10s. The slope is calculated from the actual and the previous
average.
10.5.2.1 Slope (°C / s)
If the calculated slope is greater than the set value, the alarm becomes active.
10.5.2.2 Time (s)
Alarm if the set limit value would be reached at the same slope after the set time. In the time function, the
calculated slope is multiplied by the set time. The current measured value is then added to this value. If the
result is greater than the set alarm value for “alarm on”, the alarm is triggered.
10.5.2.3 Backshift conditions
If a ROCOT alarm is active, two conditions must be met for the alarm to go back.
•The current measured value must be smaller than the switch-off value for “alarm off”
•The calculated slope must be negative
If both conditions are fulfilled, the alarm switches off again.
10.5.3 Cyclic relay test
For each alarm, a “cyclic relay test” can be activated. This switches the relay according to the set parameters.
The cyclic switching ensures a longer service life of pumps and motors, which a normally never in operation.
This prevents a defect (sticking due to corrosion, …) on the connected pumps or motors.
10.5.4 Differential temperatures
With the TR660IP a difference between 2 sensors can be calculated. The two next smaller measuring inputs
are always used for the source sensors. For example, if you want to calculate a difference on measurement
input 4, sensor 3T –sensor 2T is used.

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10.5.4.1 Differential temperatures
Each sensor can be parameterized to the type of difference (Diff xT-yT). This measurement input thus
calculates the difference between the two sensors displayed.
10.5.4.1 Differential temperatures absolute
With the absolute difference measurement, only the difference between the two selected sensors is formed.
The result is always a positive value.
10.6 Simulation
If required (commissioning, troubleshooting, …), individual functions (sensor values, relay states) can be
simulated. The simulation can be started either directly on the device (menu -> simulation) or via the web
interface (home -> start simulation). The simulation mode is active for 15 min from the last action, or can be
shut down directly by the user.
10.7 Firmware update
Firmware updates can be installed via the web browser (system). If the update notification is active, a
message is displayed as soon as a new firmware version is available. If the device is not connected to the
internet, the new firmware can be downloaded from the homepage www.ziehl.com. Then the update file can
be selected under (system -> manual installation -> select firmware) and carried out via the button “manual
update installation”.
10.8 Alarm counter
There are separate alarm counters for each alarm. These alarm counters store the last 20 shutdowns with
cause and timestamp. If, instead of the correct time, a date around 1970 is displayed, the set date + time of
the real-time clock is not correct. For help see 0.
10.9 Logging
10.9.1 Intervall-Logging
Ring memory for 3014 logs possible, max. Logging time depending on the set interval
interval
Logging duration in days and hours
10s
0d
8:24h
1min
2d
2:12h
10min
20d
22:18h
1h
125d
14:00h
10.9.2 Event-Logging
Ring memory for 510 Logs possible, always logged when a relay changes state. The following data is logged
at this time:
- time UTC + local time
- current sensor values (each sensor individually)
- current alarm state (each alarm individually)
- current relay status
- simulation
- Error messages
11 Web interface
If the device is connected to an Ethernet network, it can be parameterized conveniently via a web browser on
a computer.
11.1 Home
Status displays from
•Sensors
omin. / max. values
oAlarm condition
•Alarms
oValue for „alarm on“
oactive delay times

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oRelay values
Individual values are hidden if the corresponding functions are not active.
11.1.1 Simulation
•Simulation of:
oSensors = on/off
oSensors = measurement values
oRelay = on/off
11.2 Configuration
Setting of the function parameters, description see "Factory settings of the programs"
11.3 System
•Device Name (appears in the header of the website)
•Version information (see "Factory settings of the programs")
•LCD Display setting (see "Factory settings of the programs")
•Code protection (see "Factory settings of the programs")
•Firmware update TR660IP
oUpdate notification (message if update is available)
oFirmware status, if necessary, the firmware update can carry out via the update button
omanual update installation:
▪select firmware (select downloaded firmware)
▪manual update installation (selected firmware will upload and install)
•program update / add new programs
oall currently installed programs are checked for the current version and can be updated
if necessary
onew programs can be installed on the TR660IP
•Configuration (recent changes to the device are saved with the date / time and the username,
see user management)
oSave configuration (download the system configuration, to save and transfer to other
devices)
oLoad configuration (load a saved configuration into the device and activate it). An
activated user administration is deactivated in the process. No passwords are
transmitted.
•Reset to default
oSet factory reset (optionally with/without network parameters)
oReboot
11.4 Network
•Network settings
•Modbus settings (Modbus TCP protocol on port 502)
•Time server settings and time zone settings (for the current time in the device, important to be
able to evaluate the error memory in the device)
11.5 User
•User administration (provide device with read and write rights for users in the network)
•User (activate user and create name and password)
oGuest username at login (fixed, cannot be changed): „gast“, „Gast“, „guest“, „Guest“ or
leave blank
•User permissions (determine which users have which rights on which pages)
Attention: Changes (also to passwords) are only accepted after saving (Save button).

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11.5.1 User, admin forgot your password
Deactivate user administration on the device
•Switch the device off and on again while pressing the joystick button up (↑) until “Reset”
appears in the display
•Select user administration → and switch off
11.6 Logging
•Interval logging
oStorage of all measurement / status values at the set interval
•Event logging
oStorage of all measurement / status values when changing the status of one or more
alarms
11.7 Counter
•Alarm counter
oRecording of the last 20 alarms per relay with time stamp and alarm cause
•Temperature statistics
oRecording of the temperature distribution over 22 clearly defined temperature ranges in
the range from <= 0°C bis >=200°C. These statistics can be used, for example, to
monitor the utilization of a transformer.
•Operating hour
Error search.
11.8 Temperature statistic
The temperature statistic records the residence time of the respective sensor at a certain temperature. There
are 20 predefined temperature ranges (10°C each, e.g. 0,0 … 9,9 °C) from 0,0 up to 199,9 °C. In addition,
there is an area for <0,0 °C and one for >200,0 °C. This statistic is available twic resettable via manual reset
(or by program change) and cumulated (reset only at program change or set of factory settings).
11.9 Program update
The preinstalled programs can also be updated if necessary. If a newer version is available, it will be
displayed in the program table. Here it is directly possible to install the revised version. You can also add new
programs via this function.
11.10 Modbus
All devices of type TR660IP have a Modbus TCP interface. The TR660IP RS485 also has a Modbus RTU
interface. For more information, see the Modbus operating manual.
11.11 Logging
11.11.1 Intervall-Logging
Ring memory for 3014 logs possible, max. Logging time depending on the set interval
interval
Logging duration in days and hours
10s
0d
8:24h
1min
2d
2:12h
10min
20d
22:18h
1h
125d
14:00h
11.11.2 Event-Logging
Ring memory for 510 Logs possible, always logged when a relay changes state. The following data is logged
at this time:
- time UTC + local time
- current sensor values (each sensor individually)
- current alarm state (each alarm individually)
- current relay status

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- simulation
- Error messages
12 Web interface
If the device is connected to an Ethernet network, it can be parameterized conveniently via a web browser on
a computer.
12.1 Home
Status displays from
•Sensors
omin. / max. values
oAlarm condition
•Alarms
oValue for „alarm on“
oactive delay times
oRelay values
Individual values are hidden if the corresponding functions are not active.
12.1.1 Simulation
•Simulation of:
oSensors = on/off
oSensors = measurement values
oRelay = on/off
12.2 Configuration
Setting of the function parameters, description see "Factory settings of the programs"
12.3 System
•Device Name (appears in the header of the website)
•Version information (see "Factory settings of the programs")
•LCD Display setting (see "Factory settings of the programs")
•Code protection (see "Factory settings of the programs")
•Firmware update TR660IP
oUpdate notification (message if update is available)
oFirmware status, if necessary, the firmware update can carry out via the update button
omanual update installation:
▪select firmware (select downloaded firmware)
▪manual update installation (selected firmware will upload and install)
•program update / add new programs
oall currently installed programs are checked for the current version and can be updated
if necessary
onew programs can be installed on the TR660IP
•Configuration (recent changes to the device are saved with the date / time and the username,
see user management)
oSave configuration (download the system configuration, to save and transfer to other
devices)
oLoad configuration (load a saved configuration into the device and activate it). An
activated user administration is deactivated in the process. No passwords are
transmitted.
•Reset to default
oSet factory reset (optionally with/without network parameters)
oReboot

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12.4 Network
•Network settings
•Modbus settings (Modbus TCP protocol on port 502)
•Time server settings and time zone settings (for the current time in the device, important to be
able to evaluate the error memory in the device)
12.5 User
•User administration (provide device with read and write rights for users in the network)
•User (activate user and create name and password)
oGuest username at login (fixed, cannot be changed): „gast“, „Gast“, „guest“, „Guest“ or
leave blank
•User permissions (determine which users have which rights on which pages)
Attention: Changes (also to passwords) are only accepted after saving (Save button).
12.5.1 User, admin forgot your password
Deactivate user administration on the device
•Switch the device off and on again while pressing the joystick button up (↑) until “Reset”
appears in the display
•Select user administration → and switch off
12.6 Logging
•Interval logging
oStorage of all measurement / status values at the set interval
•Event logging
oStorage of all measurement / status values when changing the status of one or more
alarms
12.7 Counter
•Alarm counter
oRecording of the last 20 alarms per relay with time stamp and alarm cause
•Temperature statistics
oRecording of the temperature distribution over 22 clearly defined temperature ranges in
the range from <= 0°C bis >=200°C. These statistics can be used, for example, to
monitor the utilization of a transformer.
•Operating hour
13 Error search
Error
Root cause
Help
Relay always switches after a
fixed time interval
Cyclic relay test is activated
Deactivate cyclic relay test
Relay does not turn on or off
when an alarm is reached
Relay has been parameterized to
“manual on” or “manual off”. The
display shows below the
respective relay an “M”.
Change relay setting
(menu -> alarm -> relay function)
The alarm counter displays a date
in the range of 1970.
In the display (footer) appears
again and again „no time“
When starting the device, no
correct date / time was set.
- Set time and date correct
(menu -> settings -> date /
time)
- Via Web interface (network)
activate a time server or
change settings manual
The display shows ∞Ω instead of
the measured value
The associated sensor has a
sensor break in one or more wires
Check sensor wires and replace if
necessary

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2-wire Pt100 / Pt1000 sensor
connected and 3-wire set in the
configuration
Check sensor. Change setting to
2-wire with associated line
resistance.
The display shows 0Ωinstead of
the measured value
The associated sensor has a
sensor short circuit between 2
wires.
Check sensor wires and replace if
necessary
Display shows nothing
- Supply voltage not connected
- Fuse has tripped
- Devise has an internal defect
- Connect supply voltage
- Replace fuse
- Send in the device for repair
„>>>“ or „<<<“ is displayed
instead of the measured value
Sensor value is greater (800°C) or
less (-200°C) than measuring
range
Check sensor and replace if
necessary
Display is to dark
The display is dimmed after the
set time (menu -> settings ->
dimming time), the set brightness
is too low (menu -> settings ->
brightness)
Increase the dimming time (menu
-> settings -> dimming time),
increase the display brightness
(menu -> settings -> brightness)
Device cannot be parameterized
The display shows “code lock” for
each parameter
Code lock active
In case of problems with the code
lock (code forgotten), the
protection can be switched off and
the code can be reset to 504 by
keeping the button pressed up
(approx. 5s) when switching on
the supply voltage. Now the code
lock can be reset.
No access via ethernet
DHCP is on, but no IP address
has been assigned
Check the DHCP server or set a
manual IP address
Invalid network area
Check the address range of the IP
address and the subnet mask
No parameters can be changed
via the browser
User administration active and no
write access for current user
available
Assign write rights to the current
user or disable user
administration. If the admin
password is not known, the user
administration can be deactivated
on the device. Disconnect the
device from the supply voltage,
push the button up, connect the
supply voltage and hold the
button (approx. 5s), reset the user
administration.
Signal on analogue output
0 … 10V => 0V,
2 … 10V => <=1,8V,
0 … 20mA => 0mA,
4 … 20mA => <=3,6mA
Sensor short circuit of an
associated sensor
Check sensors and repair short
circuit
Signal on analogue output
0 … 10V => 11V,
2 … 10V => 11V,
0 … 20mA => 22mA,
4 … 20mA => 22mA
Sensor break of an associated
sensor
Check sensors and repair sensor
break
14 Disposal
Disposal should be carried out properly and in an environmentally friendly manner in
accordance with legal provisions.
ZIEHL is registered with the EAR Foundation under WEEE no .: DE 49 698 543.