Residual Risks; Designation According To Atex - Bosch REXROTH MAD S6 Serie Manual De Instrucciones

5-4
Operating Instructions
Malfunction
Function test
5.5

Residual Risks

Malfunction of the protective
equipment
Overloading
Grounding and discharge
currents
Material aging
5.6

Designation according to ATEX

Motor type label
Only during a malfunction, i.e. in the case of a fault in the system, may
the brake be activated when the motor is turning to, for example, prevent
dangerous dropping of vertical axes. In this case, sparks may be
generated in the brake and increased temperatures may occur within the
motor. When a malfunction occurs, the operator must eliminate it
immediately.
Before commissioning and in operation in periodic intervals (e.g. every 8
hours), the functioning of the brake is to be checked with an appropriate
braking test. By applying a defined amount of motor torque, the brake is
tested for slippage. For certain drive control devices, it is possible to carry
out an integrated brake test using the Brake Monitor command. Further
information can be found in the respective firmware operation manual for
the drive control device.
If the scavenging device and the monitor for maintaining the protective
measures fail simultaneously, explosion protection in a hazardous area is
no longer ensured and a danger of explosion exists.
When the motor is overloaded, including the case where errors in the
mechanical or electrical equipment of the machine occur, high
temperatures that result in the danger of explosions can occur.
Variable-speed drive systems cause unavoidable discharge currents. If
the grounded connector in the motor cable and the second separate
grounded connector on the motor housing are not connected as specified
or are interrupted by corrosion or other defects during their lifetime, the
discharge current flows (as leakage current) over conducting housing
parts, resulting in the dangers of sparking at joints and, if explosive
materials are present, explosions. Therefore, check the proper conditions
of both grounded conductors in regular intervals.
The periods of action and penetration of explosive materials depend on
the application. They depend on the aging of the seals, the mechanical
design of the motor, the characteristics of the explosive materials and the
average temperature that occurs during the operating time as a
consequence of the load cycles.
IndraDyn A motors in ATEX design have an additional label that is located
on the side of the motor housing, next to the motor type label. It shows:
• the classification of the motor according to ATEX
• important details for adjusting the motor scavenging device.
TYP: MAD130C-0050-SL-S6-FG0-05-N1
SN: MAD130-12345
S1
P(N) 7.3 kW
I(N) 19.7 A
n(N)//n max. 500//3000 min-1
Brake 100.0 Nm
Fig. 5-2: Motor type label (example: MAD-motor)
3-PHASE INDUCTION MOTOR
7800
MNR: R911______
FD: 03W27
m 122 kg
S6/44% I.Cl. F
I.Sy. ECM1
P 15.0 kW IP 65
UN(max)
V.CI. R
M(N) 140.0 Nm
DC 24 V +-10 % 1.50 A
DOK-MOTOR*-IDYN*A*ATEX-IB02-D5-P
IndraDynA_ATEX
R
Motortypenschild.EPS