Gemo LT172 User manual

GEMO LT172 / LT172N / LT177 / LT177N
ON/OFF TEMPERATURE CONTROLLER
Attention High Voltage, Double / Reinforced NOT CE Mark
Risk of Danger, Risk of Insulation Litter
Warning Electric Shock
TECHNICAL SPECIFICATION
•Dimensions : LT172, LT172N; 36x72mm, LT177, LT177N; 35x77mm
•Panel Cut-out : LT172, LT172N; 32x67mm, LT177, LT177N; 29x71mm
•Display : 3 Digits 7 Segment
•Sensor Type : NTC
•Measuring Scale : -30 .. 150
o
C (LT172 / LT177), or -19,9 .. 99,9
o
C (LT172N / LT177N)
•SET interval : LoL .. UPL
o
C (HSt)
•Hysteresis Interval : 1 .. 20
o
C (LT172 / LT177), veya
0,1 .. 20,0
o
C (LT172N / LT177N); (Ahs, Hhs)
•Alarm interval : AtP = Abs, -Ab; LoL .. UPL
o
C (ASt)
AtP = rEL,-rL; (HSt+rAL) , (HSt-20)..(HSt+20)
o
C
•Offset : -20 .. 20
o
C (LT172 / LT177), or -19,9 .. 20,0
o
C (LT172N / LT177N)
•Resolution : ± 1
o
C (LT172 / LT177), or ± 0,1
o
C (LT172N / LT177N)
•Accuracy : ± 3 % (Over full scale)
•Control Form : ON-OFF
•Heating / Cooling : H-C; Ht (heating), CL (cooling); selectable
•Out Output : Relay (NO), 250VAC, 2A, Resistive load
•Alarm Output : Relay (NO), 250VAC, 2A, Resistive load
•Sensor Failure : In case of sensor failure, measurement out of range or hardware fails, OUT
output is first OFF for TOf and then ON for Ton periodically. For continuous
OFF, enter TOn=0 & TOf=0. For continuous ON, enter TOn=1 & TOf=0. In case
of sensor failure, measurement out of range or hardware fails, and Alarm type is
selected as “SnS“, ALARM output is always ON, otherwise under normal in
scale measurement, always OFF.
•Supply Voltage : 100..240VAC, 50-60Hz - or
(optional 12 / 24VDC - no isolation - for LT172, LT172N), or
(optional 24VDC/AC; max. isolation voltage 40VAC)
•Power Consumption : < 6VA
•Humidity : < 70% (non-condensing)
•Altitude : < 2000 m
•EMC : EN 61000-6-1, EN 61000-6-3 (Only light industrial environment)
•Safety : EN 61010-1; Pollution degree 2, measurement category II
(Only light industrial environment, double/reinforced isolated)
•Protection Class : IP20; according to EN 60529
•Operation Temp. : 0 .. 50
o
C
•Storage Temperature : -10
o
C .. 60
o
C (no icing)
•Weight : < 0.5 kg
•Keys : Micro switch
•Torque for screwing : Max. 0.5 N.m
Gürbüzoğlu Elektronik San. ve Tic. Ltd. Şti. http://www.gemo.com.tr
Çamlıtepe Cad. No:297 / 3-4 Siteler, Ankara, Türkiye e-posta: [e-mail]
Tel: [phone], Fax: [phone]
1

GEMO
INSTALLATION, USE and WARNINGS
●
This device and its packing is NOT litter and may NOT be disposed of with domestic waste. Please return
this device and its packing to an appropriate recycling point at the end of its service life.
●
Please read this user manual carefully and completely before installation and use. Please take into
consideration all warnings mentioned in this manual.
●
LT172, LT172N, LT177, LT177N are suitable only for permanent panel type mounting
●
Installation and use of this device must be done by qualified, authorized and trained technical personnel only.
●
Inspect device carefully before installation. Do not install and use broken and defective devices.
●
Do not disassemble device. Do not make any repair on any part of the device. There is no accessible part
inside the device. Please contact to manufacturer for broken and defective devices.
●
Do not use device in environments subject to flammable, explosive and corrosive gases and/or substances.
●
This device is designed for applications only in light industrial environments. This device is not suitable for
medical and residential use. This device is not suitable for use related with human health and safety. This
device is not suitable for automotive, military and marine use.
●
Do not allow children and unauthorized people to use this device.
●
Before installation and any technical work, disconnect the power supply and mains connections.
●
Check the power supply voltage level before power on, and make sure voltage level is in specified limits.
Check quality of neutral line. Improper neutral line may give permanent damage to the device.
●
Connect an external power switch and an external fuse (1A, 250VAC) to the power supply line that are easily
accessible for rapid intervention. Connect an external fuse (2A, 250VAC) for each relay output separately.
●
Use appropriate cables for power supply and mains connections. Apply safety regulations during installation.
●
Install the device in a well ventilated place. Install the device permanently into a proper panel cut-out. Fix the
device with two fasteners supplied with the device. Only front panel must be accessible after installation is
completed.
●
Do not operate the device other then the environmental conditions given in Technical Specification.
●
Do not operate the device in environments that may cause conductive pollution.
●
Take precautions against negative environmental conditions like humidity, vibration, pollution and high/low
temperature during installation.
●
Keep device, signal cables and communication cables away from circuit breakers, power cables and
devices/cables emitting electrical noise. Use shielded and twisted signal and communication cables and
connect shield to earth ground on device side. Keep length of signal and communication cables less than 3m.
●
In your applications, always use separate and independent mechanical and/or electromechanical
devices/apparatus to support LT172, LT172N, LT177, LT177N to handle emergency cases..
●
Use insulated cable end-sleeves at the end of cables screwed to the device connector terminals.
●
Maximum torque for screwing; 0.5 N.m.
●
Please check www.gemo.com.tr for latest device and documentation updates regularly. All updates and all
information are subject to change without notice.
GENERAL SPECIFICATION
●
This device is designed for basic temperature control applications only in light industrial environments.
●
µP based, digital temperature controller with control and alarm output
●
Sensor: NTC
●
ON-OFF control form
●
Outputs: Out and Alarm
●
Heating and Cooling Function
●
Adjustable delay timer before OUT ON for cooling function
●
Adjustable Hysteresis Value
●
Adjustable Upper and Lower Limit for SET and Alarm Value
●
Offset feature
●
Password Protection
●
Displays SET and PROCESS values
●
Excellent linearity with
o
C/Ohm look-up table
●
High accuracy
●
EEPROM memory to store settings
●
Easy connection with plug-in connectors
Gürbüzoğlu Elektronik San. ve Tic. Ltd. Şti. http://www.gemo.com.tr
Çamlıtepe Cad. No:297 / 3-4 Siteler, Ankara, Türkiye e-posta: [e-mail]
Tel: [phone], Fax: [phone]
2

GEMO
PROGRAMMING HEAT SET VE ABSOLUTE ALARM SET
PROGRAMMING OTHER PARAMETERS
Gürbüzoğlu Elektronik San. ve Tic. Ltd. Şti. http://www.gemo.com.tr
Çamlıtepe Cad. No:297 / 3-4 Siteler, Ankara, Türkiye e-posta: [e-mail]
Tel: [phone], Fax: [phone]
3
SET
HSt
LoL .. UPL
o
C
SET
ASt
LoL .. UPL
o
C
SET
Heat SET,
(Proses SET)
is set LoL...UPL.
Displayed if AtP=abs, -ab.
Absolute Alarm SET
value is set LoL...UPL.
AtP =
rel, -rel
SnS
Press 2 sec.
Prog. end
Display
SET
Prog. end
SET
Ahs
SET
oFS
SET
+
Cod Enter 162
SET
UPL
SET
AtP
SET
rAL
SET
AtP=
Abs,-Ab,SnS
H-C
Function
selection
SET
LoL
SET
tOn
SET
Display
dtr
0..300 sec
SET
Abs,-Ab,
reL,-rL,
SnS
H-C=
Ht
Press for 2 sec.
Hhs
0..300 sec
tOF
SET
0..300 sec
Ht/CL Hysteresis
value. (oC)
Upper limit for
LoL, HSt and ASt.
Ht: Heating Function
CL: Cooling Function
Lower limit for
Up.L, HSt and ASt.
In case of sensor failure, measurement
out of range or hardware fails, OUT
output is first OFF for TOf and then ON for
Ton periodically. For continuous OFF,
enter TOn=0 & TOf=0. For continuous ON,
enter TOn=1 & TOf=0.
Alarm Hysteresis
value (oC)
Offset Value; Offset is directly
added to the measured value. This
feature shall be used for user calibration.
Normally set to 0.
Enter 162 to pass to
Parameter prog. mode.
Relative Alarm Value.
Displayed if AtP is reL or –rL.
Delay time before OUT is ON. Active
only for cooling function.
Alarm Type:
Abs: Absolute -Ab: Absolute, invert out
reL: Relative -rL: Relative, invert out
SnS: Sensor failure alarm.
1 .. 20oC /
0,1 .. 20,0oC
-20 .. +20 oC /
-19,9 .. +20,0 oC
LoL .. 150 oC /
LoL .. 99,9 oC
-30 .. UPL oC /
-19,9 .. UPL oC
1 .. 20oC /
0,1 .. 20,0oC
-20 .. +20 oC /
-19,9 .. +20,0 oC
Factory SET Values:
HSt: 50
o
C / 30,0
o
C
ASt: 100
o
C / 80,0
o
C
H-C : Ht
Hhs: 3
o
C / 0,5
o
C
Ahs: 3
o
C / 0,5
o
C
UPL: 150
o
C / 99,9
o
C
LoL: -30
o
C / -19,9
o
C
oFS: 0
o
C / 0,0
o
C
AtP : Abs
rAL: 3
o
C / 0,5
o
C
dtr: 25 sn
tOn: 0
tOF: 0

GEMO
OPERATION; ALARM OUTPUT
If Alarm mode (AtP) is selected as “SnS”; in case of sensor failure, measurement out of
range or hardware fails (when “or” is displayed), OUT output is first OFF for TOf and then ON
for Ton periodically. For continuous OFF, enter TOn=0 & TOf=0. For continuous ON, enter
TOn=1 & TOf=0.
OPERATION; ON / OFF CONTROL
Heating Function: OUT relay is OFF when process value (PV) is greater then or equal to
SET value. OUT relay is ON when PV is less then or equal to (SET-Hhs) value.
Cooling Function: OUT relay is OFF when process value (PV) is less then or equal to
SET value. OUT relay is ON when PV is greater then or equal to (SET-Hhs) value.
ERROR MESSAGE
or: Displays “or” message in case of sensor failure, measurement out of range or
hardware fails to measure input signal.
CLAEANING
Do not use any solvents (alcohol, thinners, benzine, acid, etc.) or corrosive substances to clean
the device. Use only a dry and clean non-abrasive cloth. Before cleaning, disconnect the power
supply and mains connections.
Gürbüzoğlu Elektronik San. ve Tic. Ltd. Şti. http://www.gemo.com.tr
Çamlıtepe Cad. No:297 / 3-4 Siteler, Ankara, Türkiye e-posta: [e-mail]
Tel: [phone], Fax: [phone]
4
PV
ALARM AtP= -Ab, -rL
AtP = Abs, -Ab; X = ASt
AtP = reL, -rL; X = HSt + rAL
X(X+A.hys)
PV
ALARM AtP=Abs, rel
X
(X-A.hys)
ONON
HSt(HSt - Hhs)
PV
OUT
HSt (HSt + Hhs)
HEATINGCOOLING
ONON