Control Terminal X38 - Siemens SIMOVERT MASTERDRIVES Betriebsanleitung

Mounting, Connecting-Up
3.5

Control terminal X38

Terminal / Remark
meaning
1 Inhibit input The braking unit is inhibited when + 24 V DC to reference potential (pin 2) is applied.
All active error messages are acknowledged at the same time. For an error to be
acknowledged, high level must be applied to this input for at least 2 ms (for
information about error acknowledgement, see also chapter 5 "Monitoring").
To enable the braking unit, remove the 24 V DC supply again (low level).
High level: 15 ... 30 V (Input current I ≤ 10 mA)
Low level: -0.6 ... 5 V
Inhibition and acknowledgement are possible only if the external 24 V DC supply is
connected to pins 4 and 2.
2 M Ground for external 24 V supply and reference potential for signals
3 Not assigned No function
4 P24 Positive pole of external 24V supply
20 V – 30 V DC / 0.5 A
Output transistor conductive
5 Fault output
(output voltage > P24 – 3 V)
Output transistor blocked
(0 V)
The fault output has a maximum current-carrying capacity of 300 mA.
The fault output is referred to the potential at ground terminal X38, pin 2
NOTE
3-10
The braking unit will work even if control terminal strip X38 is not
connected.
When the DC link voltage is disconnected and the internal voltage
supply drops (fault LEDs go out), errors are cleared automatically.
The cables for connecting control terminal strip X38 must be installed
separately from the power cables.
Length of control cables < 10 m.
→
No fault
→
Fault
or
braking unit inhibited
or
no DC link voltage
or
no external 24 V supply
6SE7087-6CX87-2DA1
Braking Unit SIMOVERT MASTERDRIVES
05.2009
Siemens AG