Installation and Operating Instructions for
Brake EV/EH 018/024/028/038 EFM
– 240M/480M
Electromagnetically activated- Spring released
E 09.768e
issue: 23.01.2020
version: 2
drawn.: MAYA
checked.: EISF pages: 23
page: 9
7. Technical requirements for safe and reliable operation
Mounting the brake to stable, low-vibration machine components ensures low-screech, low-noise
braking.
To protect the brake electronics, the installation of surge arresters are mandatory. These surge
arresters (per phase one) must be connected between the customer's switching relay and the
brake electronics. In this case, the surge arrester of L1 and L2 is switched to N or PE in order to
derive mains disturbances. The user must ensure that no voltage peaks greater than 1200V can
occur. This means that the protection level of the overvoltage protection must be selected so low
that no higher voltage peaks can occur at the electronics of the brake. This mainly depends on
the energy of the mains disturbances in the user's mains.
For 230 / 400V electric grids e.g., surge protection switch of the brand "Bourns 1250-xS-230" can
be used. In 480V mains overvoltage circuit breaker type "Bourns 1250-2S-400" can be used.
8. Installation of the RINGSPANN brake
8.1 General instructions for assembly and installation
Before installing the brake, the brake disc must be cleaned with alcohol, e.g. ethyl or isopropyl al-
cohol or a water-based surfactant solution (soapy water, etc.) and then rubbed dry with a clean
cloth.
When cleaning the brake disc with a thinner, acetone or a brake cleaning agent, it is important to
ensure that neither these cleaners nor any cleaner residues come in contact with the brake pads.
This is especially important in the case of brakes used only as parking brakes, as no dynamic
braking operations take place during which thinner residues would be rubbed off the brake disc.
Please note!
Oil and rust-proofing-agent residues reduced friction coefficient and thus dimin-
ish transmissible braking torque substantially!
8.2 Prior assembly and installation
Prior to installation, check to ensure that the mounting surface is even and planned run between
the brake disc and the mounting surface is within the tolerance range of 0.2 mm.
Check the axial movement of the brake disc. Axial movement must not exceed ± 0.2 mm.
Maximum permissible lateral brake disc wobble is 0.1 mm. Greater wobble may cause rattling
and shaking of the brake unit.
Attention!
Check to ensure that the brake disc rotates freely.
8.3 Adjust the brake to the brake disc thickness and mount the brake
