Vermes MHC 48-1 User manual

VTK-VS-BA-058e-B | User Manual MHC 48-1 | Introduction
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VTK-VS-BA-058e-B | User Manual MHC 48-1 |Introduction
Content
1Introduction ................................................................................... 3
1.1 Intended Use............................................................................................................... 4
1.2 Abbreviations .............................................................................................................. 4
2Main Function: Heating................................................................... 5
3Quick Start ..................................................................................... 6
4Heater Control Unit MHC 48-1 ...................................................... 10
4.1Technical Data........................................................................................................... 10
4.2 Front Side .................................................................................................................. 11
4.3 Top Side..................................................................................................................... 12
4.4 Function Keys ............................................................................................................ 13
4.5 Beeper alarm............................................................................................................. 15
4.6 Setting up the MHC 48-1........................................................................................... 16
4.7 Menu Structure......................................................................................................... 20
4.7.1 Top Menu (Basic Level) ............................................................................................. 20
4.7.2Second Menu Level ................................................................................................... 22
5Communication Interfaces ............................................................ 24
5.1 Serial Interface RS-232C: 9-Pin Sub-D ....................................................................... 24
5.2 Commands ................................................................................................................ 25
5.2.1 Command Overview.................................................................................................. 26
5.2.2 Command Explanations ............................................................................................ 27
5.3 PLC Interface: 15-pin, Sub-D ..................................................................................... 34
6Error Messages ............................................................................. 35
6.1 Table of Error Messages............................................................................................ 35
6.2 Explanations of Error Messages ................................................................................ 37
7Safety Notes ................................................................................. 44
7.1 Obligations and Liability............................................................................................ 44
7.2 Residual Risks ............................................................................................................ 44
7.3 Specification and Technical Notes ............................................................................ 45
7.4 Warnings ................................................................................................................... 45
7.5 Protective Equipment and Safety Clothing ............................................................... 45
8Attachments................................................................................. 46
8.1 Dimensional Drawing MHC 48-1 ............................................................................... 46
8.2 Connection of MHC 48-1 with Adapter Cable MHC-48 for Power Supply,
extendable ................................................................................................................ 47
8.3 Connection Diagram PLC Interface ........................................................................... 53
8.4 Overview of the Function Keys of the MHC 48-1 ...................................................... 54
8.5 Temperature Correction ........................................................................................... 57
8.5.1 Basics of the Temperature Correction ...................................................................... 57
8.5.2 Finding the Correction Parameters m and T ............................................................. 59
8.5.3 Entering the Correction Parameters m and T ........................................................... 60
8.6 Firmware Update with the MHC_ Firmware_Loader................................................ 61
8.7 EC Declaration of Conformity.................................................................................... 65
9Index ............................................................................................ 66

VTK-VS-BA-058e-B | User Manual MHC 48-1 | Introduction
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1INTRODUCTION
This User Manual explains the main properties and functions of the heater controller MHC
48-1 (see Picture 1). You can use it to control integrated heaters (for a list of compatible
heaters, see chapter 1.1)connected with a microdispensing system.
The pictures in this manual might differ slightly from the final product.
In the case of further questions, consult our Technical Support.
Technical Support VERMES Microdispensing GmbH
Rudolf-Diesel-Ring 2
83607 Holzkirchen
Tel.: [phone]
Fax.: [phone]
[e-mail]
www.vermes.com
Service hours Monday - Friday 9.00 to 17.00 (CET).
Picture 1: MHC 48-1 (with Adapter Cable MHC-48 for Power Supply, PLC & RS232)

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VTK-VS-BA-058e-B | User Manual MHC 48-1 |Introduction
1.1 Intended Use
You can use the MHC 48-1 for the following applications:
•Controlling the nozzle heater of your VERMES Microdispensing System
•Keeping a dispensing application stable at a constant temperature
The MHC 48-1 can control heaters working on an extra-low voltage basis (48 V). See the de-
vices listed below.
Heater:
MDFH-48-CC (Order no. 1013967, power consumption 20 W, maximum 180 °C)
MDFH-48-CC right (Order no. 1014014, power consumption 20 W, maximum 180 °C)
MDFH-48-CC left (Order no. 1014145, power consumption 20 W, maximum 180 °C)
MDFH-48-CC-HC (Order no. 1014147, power consumption 20 W, maximum 180 °C)
MDFH-48-CCI (Order no. 1013969, power consumption 20 W, maximum 180 °C)
MDFH-48-CH-TA (Order no. 1014052, power consumption 20 W, maximum 180 °C)
MDFH-48-CH-TA right (Order no. 1014059, power consumption 20 W, maximum 180 °C)
MDFH-48-CH-TA-B (Order no. 1014353, power consumption 20 W, maximum 180 °C)
MDFH-48-CH-TA-B +10 mm (Order no. 1015272, power consumption 20 W, maximum
180 °C)
MDFH-48-CHI-BY (Order no. 1014233, power consumption 20 W, maximum 180 °C)
MDH-48-BY-45W (Order no. 1014533, power consumption 45 W, maximum 180 °C)
1.2 Abbreviations
Abbr.
Full name
BL Boot loader
FW Firmware
MDC Controller (MicroDispensingControl unit)
MDF Fluid box (MicroDispensingFluid box)
MDS MicroDispensingSystem
MDV Valve (MicroDispensingValve)
MHC Microdispensing heater controller
MV Mean value
PWM Pulse-width modulation
SSD Seven-segment display

VTK-VS-BA-058e-B | User Manual MHC 48-1 | Main Function: Heating
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2MAIN FUNCTION: HEATING
The MHC 48-1 has the following main function: controlling heaters. This chapter describes
this main function.
VERMES MicroDispensing Systems can be fitted with a heater. With a heater, you can con-
trol the dynamic viscosity of the fluid you want to dispense. For some fluids, dispensing
without heating is impossible. Heating may also be required to ensure a constant process
temperature or is necessary when the dispensing has to take place above room tempera-
ture.
There are two main types of heater: nozzle heaters and cartridge heaters. With the MHC 48-
1, you can control nozzle heaters. For a list of heaters compatible with the MHC 48-1, check
chapter 1.1.
Picture 2 shows one example, the MDFH 48-CC, connected with a MicroDispensing Valve.
The heater contains a heating element, to create the necessary warmth near the nozzle (see
Picture 3, red part). To check the temperature, the heater also contains a Pt100 sensor (see
Picture 3, blue part). This allows the MHC 48-1 to keep the target temperature near the noz-
zle.
Since there is a small but necessary distance between the sensor and the nozzle, in some
applications might be a slight difference between the temperature measured at the Pt100
sensor and the actual temperature at the nozzle. For those applications, you have the possi-
bility to use a temperature correction. You can change the correction parameters with the
serial command “CON:TCORR” (see chapter 5.2.2).
We recommend you use the temperature correction only after you have fully understood
the system. You can find more information in the attachment 8.3.
Picture 2: MDV with MDFH 48-CC
Picture 3: MDFH 48-CC schematic with heating element (red) and Pt100 sensor (blue)

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VTK-VS-BA-058e-B | User Manual MHC 48-1 |Quick Start
3QUICK START
This chapter provides the necessary information to start your MHC 48-1 and to use its basic
functions (switching on the heater, setting the target temperature). We recommend to read
the whole manual before you start working with the MHC 48-1, but this chapter gives you a
quick introduction to use the basic functions. Once you want to use other features of the
MHC 48-1 (e.g. the serial interface), you will need to refer to the corresponding chapters.
With the following steps, you can connect your MHC 48-1 and use the basic functions.
Step 1: Plug in adapter cable
You need your Adapter Cable MHC-48. You either have the Adapter Cable MHC-48 for
Power Supply, PLC & RS232 (see Picture 4) or an Adapter Cable MHC-48 for Power Supply,
extendable (see Picture 5). For the quick start and the use of the basic functions, it makes no
difference which one you use. This chapter uses the Adapter Cable MHC-48 for Power Sup-
ply, extendable.
Plug the adapter cable in the sub-D socket on top of your MHC 48-1 (see Picture 6). Screw
the sub-D depth bolts tight.
Picture 4: Adapter Cable MHC-48 for Power Supply, PLC & RS232
Picture 5: Adapter Cable MHC-48 for Power Supply, extendable

VTK-VS-BA-058e-B | User Manual MHC 48-1 | Quick Start
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Step 2: Connect power supply
Connect the 4-pin PCB connector of the adapter cable with the counter part of your power
supply (see Picture 7 and Picture 8). You power supply must be set to 48 V DC.
Picture 6: Connect the adapter cable
Picture 7: Power connection (not yet connected)
Picture 8: Power connection (connected)

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VTK-VS-BA-058e-B | User Manual MHC 48-1 |Quick Start
Step 3: Connect heater
You have to connect the heater cable of your heater (e.g. MDFH 48-CC, see Picture 19 with
MDFH isolation body NAN-fix included) with the socket for heater on top of the MHC 48-1 (see
Picture 9). Push the plug in; then screw the connection tight. Press the case slightly forward
while screwing.
Step 4: Switch ON the MHC 48-1
The MHC 48-1 has no separate ON/OFF button. Turn it ON by turning the power supply
(48 V DC) ON.
After the start the display will show “OF” (= off), since the heater is OFF. Later you can
change the settings of your MHC 48-1, so that the heater is ON after the start-up of the
MHC 48-1 and the display shows the current temperature (see chapter 4.7).
Step 5: Set target temperature
Press the Set key shortly to change the display for the target temperature. When showing
the target temperature, the display is flashing rapidly. By pressing the Up-key or Down-key
(see Picture 10 and Picture 11)you can change the target temperature. With the Up-key, you
increase the temperature; with the Down-key, you decrease the temperature. The highest
temperature you can set is 99 °C. For temperatures over 70 °C, you will get a warning sound.
After approx. 3 s without pressing a key, the display jumps back to the current temperature.
You can also press the Set-key (see Picture 12)shortly, to jump back directly.
Picture 9: Heater connected
Picture 10: Up-key
Picture 11: Down-key

VTK-VS-BA-058e-B | User Manual MHC 48-1 | Quick Start
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Step 6: Switch ON the heater
You activate the heater by pressing the Set-key (see Picture 12)longer. The display changes
to the current temperature, which is given in °C. The value shown is flashing slowly. This is
the case, until the current temperature has reached the target temperature and is stable.
Then the display of the current temperature is steady without flashing.
When the heater is ON, you can still change the target temperature as shown in step 5. The
display of the current temperature will again flash slowly, until the current temperature has
reached the target temperature. To deactivate the heater, you press the Set-key longer. The
display will show “OF”.
CAUTION! (High temperatures)
The MHC 48-1 can control integrated nozzle heaters at temperatures of up to 99 °C. Do not
touch the nozzle area during operation. Afterwards only touch it once it has cooled down.
Step 7: Save target temperature
If you change a target temperature in the main menu, this is not saved after a re-start. To
save a new target temperature for future use, follow the instructions below.
Press the key combination Up-key + Down-key together for a long moment. The display
jumps to the menu item “H.1” in the second menu level (see chapter 4.7.2). Press the Set-
key shortly. You see the currently saved target temperature. With the Up-key and the
Down-key, you can set the desired target temperature. A short pressing increases the value
by 1 (Up-key) or decreases it by 1 (Down-key). By pressing the key longer, the display starts
to scroll up or down, respectively.
With another short pressing of the Set-key, you save your changes. The display jumps back
to the menu item “H.1”. If you want to abort your changes without saving, you have to press
the Set-key longer to jump back to “H.1”.
With pressing the Set-key longer in the menu item “H.1”, you jump back to the top menu
level to the display of the current temperature. Be aware that this change of the saved tar-
get temperature only works after a re-start. Alternatively, you can set the target tempera-
ture manually to the new value (see step 5).
You can find a detailed description of MHC 48-1 in chapter 4. The interfaces and serial com-
mands are explained in chapter 5 and potential error messages in chapter 6.
Picture 12: Set-key

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VTK-VS-BA-058e-B | User Manual MHC 48-1 |Heater Control Unit MHC 48-1
4HEATER CONTROL UNIT MHC 48-1
This chapter describes the menu structure, keypad and the functions of the heater control
unit MHC 48-1. It also explains how to set it up.
IMPORTANT NOTE! (No ON/OFF button)
The MHC 48-1 has no separate ON/OFF button. Just connecting the power supply (48 V DC)
will turn it ON and disconnecting it will turn it OFF.
4.1 Technical Data
Parameter Value
Dimensions 135 mm H x 42 mm W x 75 mm D (with adapter)
(see also dimensional drawing, page 46)
Weight ca. 200 g (+ 130 g for the adaptor)
Supply Voltage 48 V DC
Power Consumption 25 W
Current Consumption 550 mA max.
During start-up, this value can increase by a fac-
tor of 5 (start-up peak).
Operating Temperature 0 °C to 50 °C
Air Humidity 35 % till 80 % rH
Casing Type Case with clamp for top hat rail
Color of Casing Silver and blue
Display Seven-segment display (SSD)
Display Color Green letters on dark background
Keypad 3 function keys
Color of Keys Blue-white, orange
Plug Contacts (Top)Socket for Cable for Heater
9-pin Sub-D socket for Adapter Cable MHC-48 for
Power Supply, PLC & RS232
(At the adapter cable:
Power Supply: 4-pin PCB connector for power
connection (48 V DC)
PLC: 15-pin Sub-D socket
RS-232C: 9-pin Sub-D socket)