Moog DS2110, Инструкция по установке и эксплуатации

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APPENDIX C – RESTART INTERLOCK CIRCUITS C-5
CDS7324 (FORMERLY LSF-0819)
Rev. A INSTALLATION & USER’S MANUAL
C.4 RESTART INTERLOCK CIRCUIT
The restart interlock is provided by redundant interlocking devices acting independently on power control devices.
C.4.1 HARDWARE CHANNELS
The hardware channels (channel 1 and channel 2) interrupt the auxiliary power supply to the IGBT drivers via two
relays with forcibly guided contacts.
C.4.1.1 MONITORING CHANNEL 1
For monitoring the interlocking system the input signal “Channel 1” and the output signal “Channel 1 verification”
must be checked to have the appropriate status under the following conditions:
Condition 1:
“Channel 1” = 0 “Channel 1 verification” = 1
Condition 2: “Channel 1” = 1 “Channel 1 verification” = 0
Condition 2 allows for a short circuit on the wiring of the NC contact of the safety relay to be detected. When this
check is not available it is necessary to follow the wiring procedures listed in the following pages.
When an incorrect signal status is monitored, the line contactor must disconnect the drive supply, taking care of
the release time (max 100 ms) of the signal. An error message must be available to make the malfunction of the
safety circuit visible.
C.4.1.2 MONITORING CHANNEL 2
The second hardware channel can be requested by the product standard or can be used to improve the reliability
of the safety category.
For monitoring the interlocking system the input signal “Channel 2” and the output signal “Channel 2 verification”
must be checked to have the appropriate status under the following conditions:
Condition 1:
“Channel 2” = 0 “Channel 2 verification” = 1
Condition 2: “Channel 2” = 1 “Channel 2 verification” = 0
Condition 2 allows for a short circuit on the wiring of the NC contact of the safety relay to be detected. When this
check is not available it is necessary to follow the wiring procedures listed in the following pages.
When an incorrect signal status is monitored, the line contactor must disconnect the drive supply, taking care of
the release time (max 100 ms) of the signal. An error message must be available to make the malfunction of the
safety circuit visible.
C.4.2 SOFTWARE CHANNEL
The software channel 2 interrupts the signal path to the IGBT drivers with the standard software procedure. To
disable the axis, the input “Drive Enable” of the J2A connector (pinI1 w.r.t. RET) shown in Section 3, must
become low (0V).
C.4.2.1 MONITORING SOFTWARE CHANNEL
A failure in the software channel operation cannot be detected by the drive. It is possible to define a cyclic test
during the working conditions in order to find the failure of the software channel. For example, at restart it is
possible to give the drive a reference signal with Drive Enable OFF and to verify that the motor does not rotate.
In case of fault the motor must be stopped via the hardware channel(s) and via the line contactor. The motor must
not restart until the fault has been fixed.