M&C 70304G User manual

Temperature Controller
70304G
Instruction Manual
Version 1.00.02

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List of content
1General information .................................................................................................................... 4
2Declaration of conformity........................................................................................................... 4
3Safety instructions...................................................................................................................... 5
4Warranty ...................................................................................................................................... 5
5Used terms and signal indications ............................................................................................ 6
6Introduction ................................................................................................................................. 7
7Receipt of goods and storage .................................................................................................... 7
8Description .................................................................................................................................. 8
9Dimensions and installation....................................................................................................... 9
10 Technical Data ....................................................................................................................... 10
11 Electrical connection............................................................................................................. 11
11.1 Connection of temperature sensor ....................................................................................... 12
12 Operating principle................................................................................................................ 12
12.1 Parameter of the user level with factory setting .................................................................... 12
13 Change of parameters........................................................................................................... 13
13.1 Removing and activating the level inhibit.............................................................................. 13
13.2 Menu structure ..................................................................................................................... 14
13.3 Time Out .............................................................................................................................. 15
14 Change of the setpoint.......................................................................................................... 15
15 Comissioning......................................................................................................................... 15
15.1 Entry and check of controller parameters ............................................................................. 15
15.2 Self-optimizing (PID action) of control circuit ........................................................................ 16
15.3 Commissioning with heated foreign components ................................................................. 17
16 Low temperature alarm and excess temperature limitation ............................................... 17
16.1 Restarting after excess or low temperature alarm ................................................................ 17
17 70304G with mA-output......................................................................................................... 18
17.1 Adjusting Signal type and temperature range....................................................................... 18
18 Decommissioning.................................................................................................................. 18
19 Maintenance........................................................................................................................... 19
20 Spare part list......................................................................................................................... 19
21 Appendix ................................................................................................................................ 20
21.1 Parametrization for standard gas sample probes ................................................................. 20
List of Illustrations
Figure 1 Display/control elements.................................................................................................... 8
Figure 2 Housing dimensions and installation dimensions............................................................... 9
Figure 3 Electrical wiring plan........................................................................................................ 11
Figure 4 Menu structure................................................................................................................. 14

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Dear customer,
Thank you for buying our product. In this manual you will find all necessary information about this M&C
product. The information in the manual is fast and easy to find, so you can start using your M&C prod-
uct right after you have read the manual.
If you have any question regarding the product or the application, please don’t hesitate to contact M&C
or your M&C authorized distributor. You will find all the addresses in the appendix of this instruction
manual.
For additional information about our products, please go to M&C’s website www.mc-techgroup.com.
There you can find the data sheets and manuals of our products in German and English.
This Operating Manual does not claim completeness and may be
subject to technical modifications.
© 03/2020
M&C TechGroup Germany
GmbH. Reproduction of this doc-
ument or its content is not allowed without permission from
M&C.
Version:
1.00.02

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Head Office
M&C TechGroup Germany GmbH Rehhecke 79 40885 Ratingen Germany
Telephone: 02102 / 935 - 0
Fax: 02102 / 935 - 111
E - mail: [e-mail]
www.mc-techgroup.com
1 GENERAL INFORMATION
The product described in this instruction manual has been built and tested in our production facility.
All M&C products are packed to be shipped safely. To ensure the safe operation and to maintain the
safe condition, all instructions and regulations stated in this instruction manual need to be followed.
This instruction manual includes all information regarding proper transportation, storage, installation,
operation and maintenance of this product by qualified personnel.
Follow all instructions and warnings closely.
Read this manual carefully before commissioning and operating the device. If you have any questions
regarding the product or the application, please don’t hesitate to contact M&C or your M&C authorized
distributor.
2 DECLARATION OF CONFORMITY
CE - Certification
The product described in this operating manual complies with the following EU directives:
EMV-Instruction
The requirements of the EU directive 2014/30/EU “Electromagnetic compatibility“ are met.
Low Voltage Directive
The requirement of the EU directive 2014/35/EU “Low Voltage Directive“ are met.
The compliance with this EU directive has been examined according to DIN EN 61010.
Declaration of conformity
The EU Declaration of conformity can be downloaded from the M&C homepage or directly requested
from M&C.

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3 SAFETY INSTRUCTIONS
Follow these basic safety procedures when mounting, starting up or operating this equipment:
Read this operating manual before starting up and use of the equipment. The information and warnings
given in this operating manual must be heeded.
Any work on electrical equipment is only to be carried out by trained specialists as per the regulations
currently in force.
The installation and commissioning of the device must conform to the requirements of VDE 0100 (IEC
364) ‘Regulations on the Installation of Power Circuits with Nominal Voltages below 1000 V’ and must
be in compliance with all relevant regulations and standards.
Check the details on the type plate to ensure that the equipment is connected to the correct mains
voltage.
Protection against touching dangerously high electrical voltages:
Before opening the equipment, it must be switched off and hold no voltages. This also applies to any
external control circuits that are connected.
The device is only to be used within the permitted range of temperatures and pressures.
Consider IP-protection-class when choosing installation site.
Do not use the device in hazardous areas.
Installation, maintenance, inspections and any repairs of the devices must be carried out only by quali-
fied skilled personnel in compliance with the current regulations.
4 WARRANTY
In case of a device failure, please contact immediately M&C or your M&C authorized distributor.
We have a warranty period of 12 months from the delivery date. The warranty covers only appropri-
ately used products and does not cover the consumable parts. Please find the complete warranty con-
ditions in our terms and conditions.
The warranty includes a free-of-charge repair in our production facility or the free replacement of the
device. If you return a device to M&C, please be sure that it is properly packaged and shipped with
protective packaging. The repaired or replaced device will be shipped free of delivery charges to the
point of use.

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5 USED TERMS AND SIGNAL INDICATIONS
DANGER!
This means that death, severe physical injuries and/or important
material damages will occur in case the respective safety
measures are not fulfilled.
WARNING!
This means that death, severe physical injuries and/or important ma-
terial damages may occur
in case the respective safety measures
are not fulfilled.
CARE!
This means that minor physical injuries may occur in case the re-
spective safety measures are not fulfilled.
CARE!
Without the warning triangle means that a material damage may oc-
cur in case the respective safety measures are not met.
ATTENTION!
This means that an unintentional situation or an unintentional status
may occur in case the respective note is not respected.
High voltages!
Protect yourself and others against damages which might be caused
by high voltages.
NOTE!
These are important information about the product or parts of the
operating manual which require user’s attention.
SKILLED STAFF
These are persons with necessary qualification who are familiar with
installation, use and maintenance of the product.

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6 INTRODUCTION
The compact microprocessor-controlled temperature controller type 70304G is mainly used for M&C
components that have no temperature controller in their standard specification. If the temperature con-
troller is ordered together with an M&C component, he already is parameterized and pre-programmed.
He has an adjustable sensor input for all common temperature sensors, and he can be used as a pro-
grammable two or three step or continuous and self-optimizing controller with PID structure.
7 RECEIPT OF GOODS AND STORAGE
The temperature controller is a complete pre-installed unit.
•Please take the temperature controller and possible special accessories carefully out of the packag-
ing material immediately after arrival and compare the goods with the items listed on the delivery
note!
•Check the goods for any damage caused during delivery and, if necessary, notify your transport
insurance company without delay of any damage discovered!
NOTE!
The equipment should be stored in a protected, frost-free room!

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8 DESCRIPTION
(1)
Actual value display
red, 10mm high, 4 digits
(4)
PGM-key
in order to select parameters
in order to change values
in order to change values
Exit-key in order to leave the levels
(2)
Active Setpoint
Factory setting SP1
(5)
Indication
yellow for
- Switch status of binary outputs 1 – 6
(display lights up = on)
- ramp/program function is active
- manual operation is active
(3) Setpoint
Four digits, green; decimal place is configu-
rable.
Also used for operator prompting (display of
parameter and level symbols)
(6)
16-segment display for the unit °C / °F
factory setting °C
Figure 1 Display/control elements

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9 DIMENSIONS AND INSTALLATION
The controller type 70304G (Part No. 01B8451 230 V; 01B8451a 115 V) consists of the controller
plug-in module type 703 (Part. No. 01B8401) and a 15 A solid-state relay. These form a complete con-
trol unit in a painted metal wall-mounting housing with screwed on cooling unit.
Figure 2 Housing dimensions and installation dimensions

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10 TECHNICAL DATA
Temperatue controller
type 70304G
230V/50Hz
115V/60Hz
Part No.
01B8451
01B8451a
Temperature sensor
Resistance thermometer, thermocouple
Logic output
0/12 V DC, max. 30 mA to an external solid state relay
Switching capacity solid
state relais
Max. 15 A (overtemperature limiter with continuous cut off)
Control mode
PID
Status alarm
Low temperature alarm: 1 contact NO, potential free, contact rating
250 V AC, 3 A
Indicators
measuring temperature: 4 digits 7 Seg LED red 10 mm; setting
value: as listed before but 7.0 mm; ON operation, ramp function on,
2 alarms
Temperatures
Ambient 0 -50 °C; storage -30 to +70 °C
Climatic conditions
< 90 % r.H., dew allowed
Electrical connections
4 mm2
Power supply
230 V 50/60 Hz 3450 VA
115V 50/60 Hz 1725 VA
Housing material
Steel, white lacquered
Housing version
Wall mounting housing
Weight / Protection
3.7 kg/IP65 EN60529
Optional: Controller with
mA-outlet for actual value
01B8453
01B8453a

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11 ELECTRICAL CONNECTION
WARNING!
An incorrect system voltage can damage the unit. When estab-
lishing electrical connection, ensure that the system voltage cor-
responds to the voltage specified on the rating plate!
NOTE!
For the erection of power installations with rated voltages up to
1000 V, the requirements of VDE 0100 and relevant standards and
specifications must be observed! The supply
circuit of the unit
must be provided with a fuse of 16AT (overcurrent protection); the
electrical values are shown in the technical data.
Electrical connection can take place after removal of the front cover as shown in the diagram below on
the internal terminal strip. The cover can be removed by loosening the four screws visible on the front
cover. Provided on the underside of the housing are four PG 13.5 glands through which the cables can
be inserted as shown in Figure 3. Figure 3 shows the electrical wiring diagram for the controller type
70304G.
Figure 3 Electrical wiring plan

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11.1 CONNECTION OF TEMPERATURE SENSOR
Connection of the temperature sensor depends on the type of sensor used and varies for Pt100 or
thermocouple (see Figure 3). For connection purposes, a shielded cable must be used. For a thermo-
couple, an appropriate compensating cable conforming to DIN 43714 must additionally be used.
12 OPERATING PRINCIPLE
Operating and programming of the controller takes place on two levels. On the first level for normal
operation, alarms can be reset or in case of starting up a control circuit, self-optimizing is activated.
Underneath there is the user level. All of the important adjustments of the controller are combined on
the user level and can be changed after removing the level inhibit.
12.1 PARAMETER OF THE USER LEVEL WITH FACTORY SETTING
•Setpoint SP, factory setting = 180°C
•Max. excess temperature difference to the setpoint ALSE, factory setting = 10°C. In case of
exceeding, a cut off of the controller with lock and an alarm signal takes place.
•Max. low temperature difference to the setpoint Lo-t, factory setting = 10°C. In case of falling
below, an alarm signal takes place
•Limit comparator Lfun, factory setting = 2: for controller with ramp function, 6 : for controller
without ramp function, other values are not adequate for the operation of M&C products
•Function of the controller Fnct, factory setting = 1: ramp function, 0 : fixed-setpoint controller.
Other values are not adequate for the operation of M&C products.
•Ramp slope resp. increase of temperature in °C/min (°F/min) rASL, factory setting = 30
•Sensor type SenS, factory setting = 2: Resistance thermometer in 2-wire circuit
0: no function
1: Resistance thermometer in 3-wire circuit
2: Resistance thermometer in 2-wire circuit
4:Thermocouple
•Linearization Lin, factory setting = 1, Pt100
1: Pt100
2: Pt500
3: Pt1000
7: NiCr-CuNi E
8: Cu-CuNi T
9: Fe-CuNi J
10: Cu-CuNi U
11: Fe-CuNi L
12: NiCr-Ni K
13: Pt10Rh-Pt S
14: Pt13Rh-Pt R
15: Pt30Rh-Pt6Rh B

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13 CHANGE OF PARAMETERS
To change parameters the level inhibit on the user level has to be removed.
13.1 REMOVING AND ACTIVATING THE LEVEL INHIBIT
To remove the level inhibit, act as follows:
•Standard display (below setpoint, up actual value ) has to be visible
•Press key PGM and simultaneously for 5sec.,
display = Code 3 (all levels are locked)
•Press PGM
•Change value from 3to 2with key 
•The value is blinking after 2sec. and the change is taken over
•The user level is unlocked now
•Press EXIT
To activate the level inhibit, act as follows:
•Standard display (below setpoint, up actual value) has to be visible
•Press key PGM and simultaneously for 5sec.,
display = Code 2 (all levels are locked)
•Press PGM
•Change value from 2to 3with key 
•The value is blinking after 2sec. and the change is taken over
•The user level is locked now
Press EXIT

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13.2 MENU STRUCTURE
Generally:
•Changing to the user level with PGM-key (display = User)
•To choose the first parameter press PGM-key again (display = SP)
•Changing to the next parameter with -key
•Back to the standard display press EXIT-key (2x)
Figure 4 Menu structure
Lin
Exit
Time out >2 min
SP = Setpoint
ALSE = Excess temperature with lock
Lo-t = Low temperature alarm
LFun = Limit comparator function
Fnct = Function of controller
rASL = Ramp slope
SenS = Sensor type
Lin = Linearization
290
300 .0
PGM
User
SP

ALSE
Lo-t


PGM

LFun
Fnct
rASL
SenS



PGM
Standard display
PGM
PGM
PGM
PGM
PGM
PGM
PGM
Exit
Changing parameters with

or

Takeover of changed values after 2 sec.
Exit

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13.3 TIME OUT
If no operation takes place, the controller automatically returns to the standard display after about 2
minutes using any changed parameters.
14 CHANGE OF THE SETPOINT
WARNING!
Observe the maximum temperature of the device to be
controlled to avoid damaging the same.
The setpoint value should not be reduced in one step by more than the entered alarm value, as the
setpoint value will be outside the set alarm window. This will result in the generation of an overtemper-
ature alarm, which will permanently deactivate the heating circuit.
For restart:
•Let cool down the device below the new setpoint;
•Press EXIT and -key or
•Reset of the low temperature alarm by switching off and on of the mains voltage.
15 COMISSIONING
15.1 ENTRY AND CHECK OF CONTROLLER PARAMETERS
NOTE!
For the entry and check of controller parameters, the heating of
the respective M&C component must not yet be connected.
In any event prior to commissioning, the parameters SP (setpoint),
SenS (sensor type) and Lin (linearization depending on the partic-
ular M&C unit must be entered. The remaining parameters should
correspond with the factory setting.
WARNING!
If the heating should already be connected, isolate the unit from
the power supply before disconnecting the heating!

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15.2 SELF-OPTIMIZING (PID ACTION) OF CONTROL CIRCUIT
The controller type 70304G includes the option of self-optimizing. For the initial operation of all M&C
components, this is necessary.
NOTE!
For self-optimizing of the control circuit, the heating of the respec-
tive M&C component must be reconnected to the appropriate con-
troller terminals (see Figure 3).
WARNING!
Before connecting the heating, isolate the unit from the power
supply!
Before self-optimizing firstly the ramp function has to be deactivated (Fnct = 0) and the parameter for
the limit comparator has to be changed (Lfun = 6). See also chapter 13.
The self-optimizing function can be activated as follows:
•After cable connection (Figure 3), switch on the supply.
•When the actual value (top display, red indicator)
reaches the setpoint value (bottom display, green indicator), press + keys simultaneously for
longer than 2 seconds. The word ”tUnE” now flashes in the setpoint value display and the self-
optimizing function is activated.
•Self-optimization has finished when the display changes to the standard display. The time of self-
optimizing depends on the control circuit.
•To cancel the self-optimization, press the keys + simultaneously.
After self-optimization reactivate the ramp function (Fnct = 1) and reset the parameter for the limit com-
parator (Lfun = 2).

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15.3 COMMISSIONING WITH HEATED FOREIGN COMPONENTS
Commissioning takes place as described in chapters 16.1 and 16.2. The parameters for SP, ALSE,
Lo-t, Lfun, Fnct, rASL, SenS and Lin must be entered for the respective component (see chapter 12
and 13).
The parameter rASL must be determined. For this purpose, the time for heating the unit until the set-
point temperature is reached must be measured.
This is then followed by (empirical value): rASL = 0.8 (setpoint temperature/rate of temperature
rise)
The calculated rASL value must be entered rounded.
After entering the parameters, a self-optimization, described in chapter 15.2, has to be operated.
16 LOW TEMPERATURE ALARM AND EXCESS TEMPERATURE LIMITATION
The controller type 70304G is adjusted and wired so that it uses relay 2 as a low temperature alarm
output and relay 1 as an excess temperature limitation with permanent deactivation.
Both alarms are indicated on the controller front panel by the respective number (1 or 2) extinguish-
ing. This takes place if the setpoint temperature is higher or lower than 10 °C.
Operating state
1
2
3
Heating up
off
on
on/off
Normal
heating on
on
on
on
heating off
on
on
off
Alarm
X
off
X
16.1 RESTARTING AFTER EXCESS OR LOW TEMPERATURE ALARM
In order to restart the unit after a temperature alarm with permanent deactivation, the cause of the
alarm must initially be remedied.
With not programmed ramp functions, an alarm reset must take place as follows:
•Press EXIT and keys simultaneously or
•Switch off and on the mains voltage.
With programmed ramp functions, an alarm reset must take place as follows:
•If the actual value is <±10°C to the setpoint press EXIT and keys simultaneously or
•Switch off and on the mains voltage.
In case of an alarm reset by switching off and on the mains voltage the ramp start value is equivalent to
the actual value.

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17 70304G WITH mA-OUTPUT
The controller 70304G is also available with a mA-output. This output is also configurable. The output
signal and the temperature range are adjustable.
17.1 ADJUSTING SIGNAL TYPE AND TEMPERATURE RANGE
To adjust the signal type and temperature range:
PGM-key, USEr, up to Conf, PGM-key, up to OutP, PGM-key, up to OutA, PGM-key, Out6,
PGM-key, Fnct, SiGn, PGM-key, SiGn blinking, with or choose signal type:
0 = 0-10V
1 = 2-10V
2 = 0-20mA
3 = 4-20mA (factory setting)
Takeover of the adjusted value takes place after 2sec.
up to 0Pnt (zero point of the temperature range): PGM-key, 0Pnt blinking, with or adjust zero
point (0,0 = factory setting).
up to End (end point of the temperature range): PGM-key, End blinking, with or adjust end
point (200,0 = factory setting).
18 DECOMMISSIONING
NOTE!
The place of installation of the temperature controller must be protected
from frost also in the time in which the unit is deactivated.
No particular measures are necessary for brief decommissioning of the temperature controller.

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19 MAINTENANCE
Before carrying out maintenance work, the system and process-specific safety measures must be ob-
served!
WARNING!
High voltage.
Before opening the housing, isolate the temperature controller
from the power supply!
The temperature controller does not require any special maintenance.
The temperature controller should be cleaned with compressed air from time to time depending on the
degree of pollution of the ambient air.
20 SPARE PART LIST
Temperature controller 70304G
(C) Consumable parts, (R) Recommended spare parts, (S)
Spare parts
Recommended quan-
tity
being in operation
[years]
V/E/T
1
2
3
01B8401
Electronic PID temperature controller type 703
with self-optimizing function, front-
mounting
enclosure
S
ensor input: resistance thermometer or
thermocouple
Output: 0/12 V for Solid-
State relay control
Status
signal output: 1 contact NO for excess
and low temperature alarm
Alarm relay switching capacity: 250 V AC, 3 A
Dimensions: 48 x 48 x 100 mm
Power supply: 230/115 V, 50/60 Hz
T
95A9015
Solid State Relay 25 A
Input 8/15 V DC
Output max. 264 V AC, 25 A
E
1
EZR0013
Relay for controller 70304, 230 V AC
T
EZR0010
Relay for controller 70304, 110 V AC
T

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21 APPENDIX
•Parametrization for M&C-products.
For further product documentation, please see our internet catalogue:
www.mc-techgroup.com
21.1 PARAMETRIZATION FOR STANDARD GAS SAMPLE PROBES
SP2000-H..., SP2200-H..., SP2300-H..., SP2400-H..., SP2500-H..., SP2600-H..., SP2000-H/DIL...
Probe
Version with
PT100
180 °C
PT100
320 °C
Thermo cou-
ple K 180 °C
Thermo cou-
ple K 320 °C
Thermo couple
J 180 °C
Thermo cou-
ple J 320 °C
SP
180
320
180
320
180
320
ALSE
30
30
30
30
30
30
Lo-t
30
30
30
30
30
30
Lfun
2
2
2
2
2
2
Fnct
1
1
1
1
1
1
rASL
3
3
3
3
3
3
SenS
2
2
4
4
4
4
Lin
1
1
12
12
9
9
Parametrization for heated sample tubes :
SP30-H..., SP35-H...
Version with
PT100
200 °C
Thermo couple
K 200 °C
Thermo couple
K 320 °C
Thermo couple
J 200 °C
Thermo cou-
ple J 320 °C
SP
200
200
320
200
320
ALSE
30
30
30
30
30
Lo-t
30
30
30
30
30
Lfun
2
2
2
2
2
Fnct
1
1
1
1
1
rASL
3
3
3
3
3
SenS
2
4
4
4
4
Lin
1
12
12
9
9
Parametrization for dilution probes for the US-market :
SP2000-H/DIL..., SP2006-H/DIL…, SP2006-H280/DIL
Probe version
with
PT100
180 °C
PT100
280 °C
Thermo cou-
ple K 180 °C
Thermo cou-
ple K 280 °C
Thermo couple
J 180 °C
Thermo cou-
ple J 280 °C
SP
180
280
180
280
180
280
ALSE
30
30
30
30
30
30
Lo-t
30
30
30
30
30
30
Lfun
2
2
2
2
2
2
Fnct
1
1
1
1
1
1
rASL
3
3
3
3
3
3
SenS
2
2
4
4
4
4
Lin
1
1
12
12
9
9