GRUETZNER LUB-Z Lubrication User Guide
- June 2, 2024
- GRUETZNER
Table of Contents
GRUETZNER LUB-Z Lubrication
Product details
No. Description
- Activation and programming key
- Housing
- Retaining ring
- Clearance hole for assembly
- Control panel
- Serial number
- Lubricant outlets
- Communication interface 24 V DC
Technical data
Housing
Mounting options| holes for screw 9 mm
Mounting position| upright
Operating temperature| -20 … +70*| °C
Lubricant and hydraulic
Lubricant outlets (depending on model)| 4 / 8
Max. Pressure| 70 (-10%/+15%)| bar
Steady state pressure| 50| bar
Lubricant volume (depending on model)| grease: 800 / oil: 1000| ml
Lubricant delivery| per stroke| 0,15| ml
Hydraulic connection| via PA tube 6 mm
Electrics
Operating voltage (DC)| 24 (+/- 5%)| V
Protection| 1 (slow blow)| A
Protection class| IP65
- The stated value is down to the individual application and may extensively differ in some cases (depending on the lubricant and further conditions).
This brief instruction of mounting LUB-Z addresses to experienced users. Please visit www.G-LUBE.com to download the complete user manual including all safety instructions.
Filling
Operation with oil
The LUB-Z OIL can be easily filled with up to 1000 ml of oil through the top opening after removing the activation and programming key.
Operation with grease / Mount lubricant cartridge
- Separate the housing from the power unit by turning the retaining ring counterclockwise. Caution: spring tension.
- Turn the cap on the lubricant cartridge counterclockwise and pull it off.
- Place the full lubricant cartridge on the lubrication system. Ensure that the stud engages in the slot in the lower part. Turn the lubricant cartridge clockwise onto the lubrication system. The end position is reached after a ¼ rotation.
- Place the dismantled housing on the lubrication system and press it onto the power unit. Fasten the housing to the power unit by turning the retaining ring clockwise.
Commissioning
Mechanical fastening
Place the lubrication system directly on the mounting surface and locate it by means of two hexagonal socket head screws M8x80 in accordance with DIN 912.
Electrical connection
Connect the lubrication system with an external power supply system (e.g. PLC) by adding a proper connecting cable to the electrical interface of the lubrication system . The lubrication system is now switched on and is running the operating mode of time control.
DANGER
Damaged or flawed electrical connections or unlicensed hot components lead to
heavy injuries or even death.
Bleeding the lubrication system (Execute FIL function)
Hydraulic connection
Connect the equipment hydraulically to LUB-Z. When you connect tubes to LUB-Z make sure that tubes and connectors are installed tightly, cleanly and correctly. The tube length shall not exceed 5 meters (grease) respectively 10 meters (oil), the inner tube diameter shall not be lower than 4 mm. Make sure that the end of the hose is cut straight. Insert the prefilled hose or hoses into the hose connectors of the lubrication system until they stop.
- Ideally, use tubes prefilled with the appropriate lubricant!
Check settings
Check the required values for the lubrication point and adjust the settings of LUB-Z if necessary.
Factory setting: operating mode=time mode.
Operation and settings
Two operating modes can be selected. The time mode Pu0 (ON) allows setting the number of strokes per cycle (CYCLE) and a pause time (TIME) in hours. Pause times between 1…240 hour(s) and strokes per cycle between 1…96 can be set. Additionally, LUB-Z can be embedded into a programmable logic controller (PLC) which sends orders and controls LUB-Z in pulse mode Pu1 (PAU).
Default settings, operating mode: time mode ON
- TIME = 4 The time between the start of two cycles is 4 hours.
- CYCLE = 1 The number of strokes per cycle is one (1).
Default settings, operating mode: pulse mode PAU
Pulse mode Pu1 enables embedding LUB-Z in an external control (PLC) to
command and control the device. The number of strokes (one stroke=0.15 ml)
dispensed now depend on the PLC’s signals.
Menu and LCD messages
The following graphic illustrates the unchangeable basic flowchart of the
LUB-Z menu navigation as well as the options for branching to
submenus.
- See the table on page 6 for more information on the menu and the sub-items and functions.
Actions with the activation and programming key
- Turn the activation and programming key to the OPEN position and remove it from the housing of LUB-Z.
- Place the key on the action areas SELECT and ENTER on the front of LUB-Z.
- Select/change menu items and actions with SELECT and confirm with ENTER.
- In case of inactivity, the programme automati-cally returns to the idle state (timeout).
PRO menu and PIN entry
Select the PRO menu with SELECT and confirm with ENTER. The PIN entry menu
item is selected.
(Factory setting PIN: 000, Master-PIN: 321)
Press SELECT to select the first value. Press ENTER to confirm. Enter the next
two digits of the PIN. The other menu items can be accessed or changed.
Setting TIME & CYCLE
The following example shows how to change the strokes per cycle and time
between the start of two cycles on pump body 2 in the operating mode time
mode. To do this, first switch to the PRO menu. Then select pump body 2 (P2)
with SELECT and confirm with ENTER. The TIME LED lights up. Select the desired
time with SELECT and confirm with ENTER. The display flashes twice to confirm
and the CYCLE LED lights up. Now select the desired number of strokes per
cycle with SELECT and confirm with ENTER.
- The stokes per cycle and time between the start of two cycles have been changed from the factory settings (time 4 hours/1 stroke) to time 12 hours/8 strokes.
| Display in LCD | Meaning |
|---|---|
| ON | LUB-Z is ready for operationin time mode Pu0. |
| PAU | LUB-Z is ready for operation in pulse mode Pu1 and waits for control |
signals from the PLC
Menus
Select/change with SELECT and confirm with ENTER
run| Back pressure check by special dispensing
LED P1…P4| Selection of pump body for special dispensing
During the active run command, the LCD displays the current back pressure at
the selected outlet in bar.
Pro| Programming mode (other functions), PIN protected
PIn
0
| Enter PIN
(Factory setting: 000, Master-PIN: 321)
P1 P2 P3 P4| Time control (Pu0) only:
Input of pause times and lubricant quantity for pump body,
LED TIME| Set the pause time: 1…240 hour(s)
LED CYCLE| Set the delivery strokes per cycle: 1…96
InF| Warning of excessive value
CLr| Delete critical error messages and terminate fill cycles prematurely
FIL| bleeding of the pump, for example, during initial commissioning
LED P1…P4| Selection of the pump body for bleeding
PIn| Change PIN
F1 F0| Feedback: motor run control for estimating the discharge
F1| Feedback activated (Default setting)
F0| Feedback deactivated
Pu0 Pu1| Mode: Change of operating mode
Pu0| Time mode activated (ON)
Pu1| Pulse mode activated (PAU)
ESC| This function is used to exit the current menu.
Errors (LED ALARM)| Remedy
E1| Empty level display| Insert new original cartridge.
E2| Cartridge missing. (operation with grease.)| Insert new original
cartridge.
E3| Under voltage at the indicated pump body (LED P1…P4)| Eliminate cause(s).
Delete the error using CLr or interrupt the voltage supply for a brief period.
E4| Internal electrical defect at the indicated pump body
(LED P1…P4)| Delete the error using CLr or interrupt the voltage supply for a
brief period. If this occurs again, log the pump for inspection.
E7| Back pressure too high. Possible errors: lubrication point blocked, hose
length too long, grease too hard or too stiff| Eliminate the cause of the high
back pressure. Delete the error in the program PRO using CLr or interrupt the
voltage supply for a brief period.
PIN assignment
| PIN | Assignment | Colour |
|---|---|---|
| 1 | +24 V DC | brown |
| 2 | input signal (mode Pu1) | white |
| 3 | ground | blue |
| 4 | output signal | black |
Type: M12x1 female connector; 4-pin, A-coded
- The output signal at PIN 4 can also be used in time mode Pu0 for diagnosis of the operating status of the lubrication system. The maximum permissible current output must not exceed Imax < 100 mA. No inductive load (e.g. relay) may be connected!
Input and output signals – external control (PLC)
To command LUB-Z via an external controller (PLC) it is necessary to switch
LUB-Z to pulse control mode Pu1 in PRO menu In pulse control mode LUB-Z
operates as a pulse-controlled lubrication system only if unalterable input
signals (high level) are transmitted from the PLC to LUB-Z via PIN 2 in a
defined sequence. LUB-Z signals the respective status to the PLC via high/low
levels which can be tapped off at PIN 4.
- To operate LUB-V via an external controller (PLC) in pulse control mode a program corresponding to the communication protocol must be created in the PLC.
LUB-Z provides the following unalterably defined control signals (input signals) which must be transmitted from the PLC to LUB-Z via PIN 2 of the electrical M12x1 interface as high level (+24 V DC). The control signals must be generated as high level (+24 V) by the external controller (PLC) over certain times with a tolerance of +/- 0.2 seconds.
| Signal length high level (+24 V) | Function |
|---|---|
| 2 seconds | 1 stroke at pump body 1 |
| 4 seconds | 1 stroke at pump body 2 |
| 6 seconds | 1 stroke at pump body 3 |
| 8 seconds | 1 stroke at pump body 4 |
- LUB-Z in pulse control mode Pu1 only processes the control signals listed in the table up to a maximum length of 8 seconds. If a high level (+24 V DC) exceeds the defined tolerance level, LUB-Z does not react.
Input and output signals and pause times
Immediately after the control signal at PIN 2 drops the motor run of LUB-Z
starts and 0.15 ml lubricant is conveyed to the outlet. Simultaneously with
the start of the motor run, LUB-Z sends a low level at PIN 4 as an output
signal to the external controller (PLC) to confirm the duration of the motor
run. In order to ensure a reliable and unambiguous recognition of the control
signal a pause must be observed. A pause time of at least 30 seconds is
required between the start of two identical or different
control signals. In the following example, two 4-second input signals are sent
to PIN 2 to trigger one delivery stroke each at P2. After the input signal
ends, the output signal at PIN 4 is set low for the duration of the motor run
After a pause of at least 30 seconds after the start of the first signal (2),
the second input signal can be sent.
- The output signal on PIN 4 is only transmitted when the feedback function (F1) is activated.
Output signals and LCD-Display
| LCD | Description | Output signal (PIN 4) |
|---|---|---|
| On | ready for operation | high, permanent |
| PAU | ready for operation | high, permanent |
| PAU flashing | received control signal | high, permanent |
| 01…70 | dispensing process | low, 7…17 seconds |
| E1…E7 | error | low, permanent |
- During the dispensing process, the LCD shows the pressure in bar. The bottom line shows which outlet (1 or 2) is currently active.
- Until all errors have been eliminated, LUB-Z does not process any control signals.
Maintenance
NOTICE
It is not possible to refill empty or opened lubricant cartridges. The LUB-Z
OIL can be easily refilled with up to 1000 ml of oil through the top opening
after removing the activation and programming key.