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Add-on brake ASB20/S
Add-on brake ASB20S, 5.5...11kW 230V
Braking current 10-30A, braking time 10s
Item No. 8700.1254
Features
- To decelerate three-phase and single-phase motors
- Potential-free contact for signaling a fault
- Brake system according to GS-HO-01, PL = b
- Meets the requirements of EN60204 Sec. 9.2.5.4.2 "Emergency stopping" in category 1
- DC brake with controlled braking current up to 20A (ASB20/S), optionally up to 30A (ASB20/S/30)
- Automatic brake current limitation
- Delayed application of the braking current
- Release of the motor after standstill detection
- Automatic adjustment of braking duration by standstill detection
- Reproducible setting of brake current
- Automatic adjustment to motor resistance
- Minimum thermal load on the motor
- Thermal overload protection for ASB20/S/30
- Fault detection with automatic stop
- Connection via spring-loaded terminals
- LED indicator for operating state
- For mounting on standard rails
Versions
| Item No. | Delivery Time | Stock | Quantities / Prices |
|---|---|---|---|
| 8700.1254 | On request | 0 |
Technical Features
Series Specifications
Voltage
Depending on the version 110V, 230V, 400V (+10...-15%)
Frequency
50/60Hz, limited generator operation
braking current
Adjustable, regulated, depending on the version 1...30A
Motor power
Depending on the version 0.18...11kW
Performance Level
PL = b according to DIN EN ISO 13849-1
PFH
4.23x10^-6h^-1
Mean Time To Dangerous Failure
259 years
Test No.
IFA2001245
Standstill detection
Measurement via the third motor connection.
Error detection downtime
3 times braking time longer than 10s ... 13.9s 1 time braking time longer than 14s special versions with fixed braking time special versions up to 20s
Operating display
Two LEDs
braking time
Automatic adjustment with standstill detection 0.8 ... 10s
Delay before restart
Approximately 300ms
Max. switching frequency
10% ED at 10 sec. brake time (60/h)
Self-consumption
230V / 400V approximately 2.4W / 1.7W
Power semiconductor monitoring
Overtemperature shutdown (optional)
Pre-insurance - Last page
16A gL ASB20/S/30: 25A gL
Pre-insurance - tax side
F10A
Connections - Load
Wago spring clamp terminals
Strip length
8-9mm
Cross section
0.08 - 4.0 mm² single core 28-12 AWG 0.25 - 2.5 mm² fine stranded with AHC
Connections - Control Circuit
Wago spring clamp terminals
fault reporting contact
6 A 250V AC / 6 A 30V DC
cross-section
0.08 - 2.5 mm² solid wire 28-12 AWG 0.25 - 1.5 mm² fine wire with FEP
Housing material
PA6.6-GF10-V0
Ambient temperature
-10°C ... +45°C
Storage temperature
-25°C ... +75°C
Weight
345 gr
Dimensions
43x106x103mm (W x L x D)
Individual Parameters
Designation
ASB20/S/30/FB10/230
braking current
10-30 A
Operating voltage
230 V
Motors
5.5...11 kW
Fixed braking time
10 s
Standstill detection
No
Manufacturer
Klinger & Born GmbH, In den Schlangenäckern 5, DE - 64395 Brensbach
Function description, commissioning, installation, notes
Function Description
The standstill detection only requires the brake current to be set for the switch-on brake. The brake's current controller compensates for any thermal changes in the motor resistance, ensuring that the braking time remains consistent. Production fluctuations in the motor winding are also balanced out.
The standstill detection dynamically adapts to different motor sizes in star or delta configuration. No further adjustment is needed. Once the standstill is detected, a brake current flows through the motor for an optimized after-braking period of only 0.5 seconds.
The device monitors the requirements of the trade association according to GS-HO-01 concerning braking times and fault detection. If the permissible braking time of 10 seconds is exceeded three times due to incorrect adjustment of the brake current, overload, or aging, the brake will idle the system.
If the required braking duration exceeds 14 seconds, the brake shuts down immediately. In this case, the motor may continue to run. A new start is prohibited. Both blocks can be released by a power interruption.
Furthermore, the brake monitors the internal power semiconductors and the external circuitry. The current controller prevents current from ramping up during overload. The sensor technology detects any interruption in the braking circuit and prevents further attempts to start.
When the control system is connected to the power supply, the brake conducts a brief self-test by activating the brake current for approximately 200 milliseconds. After about 0.5 seconds, the control system is ready for a motor start.
Commissioning
The required brake current depends on the motor used and the moment of inertia. Therefore, it may be necessary to change the factory preset. The brake current should be adjusted via the potentiometer so that the motor comes to a standstill within 10 seconds. Braking times under 3 seconds can cause unnecessary heating of the brake and motor and should be avoided. The brake current should be monitored during this adjustment with a clamp meter or DC current clamp (with True RMS) and must be below 20A.
Ensure that the maximum braking times are adhered to with all tools and saw blades. Once the initial setting is completed, the control system is ready for operation.
In standby and during motor operation, the green LED lights up. During the braking process, the green LED blinks. If the red LED lights up, the braking time has been exceeded or another fault has occurred. The brake now prevents a further attempt to start the motor. The blockade is released when you briefly disconnect the device from the power supply.
Our version ASB20/S additionally features a relay, which can provide an external fault signal via a potential-free contact.
Installation Note
The motor connection cable should be as short as possible. Cable lengths over 10 meters can become critical for standstill detection. To prevent interference, the motor cable must not be routed alongside other high-frequency control cables.
Note
With machines that have belt drive, gear reduction, and unfavorable settings, resonances may occur during braking depending on the motor, which can interfere with standstill detection. In many cases, this can be remedied by adjusting the brake current. If you need assistance with this, please contact us.
Generator operation is possible if properly sized.
Not suitable for transformers and inverters.