Signal States - Pilz PMCtendo DD5 Operating Manual

Function description
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If the safety function is automatically activated by a control system, you must ensure
that the output on the control system is monitored for malfunction. This can avoid a
scenario in which the safety function can no longer be actived, e.g. due to a short
across the contacts.
4.3.3.2

Signal states

If the safety function STO is not required, 24 VDC must always be present at the input
STO-ENABLE.
Servo amplifier states when using STO-ENABLE:
STO-ENABLE
0 V
0 V
24 V
24 V
The safety function STO may only be activated once the motor has stopped rotating (set-
point = 0 V, speed = 0 min
The following sequence must be maintained if the drive is to use controlled braking:
1. Controlled braking of the drive (speed setpoint = 0 V)
2. Disable the servo amplifier if speed = 0 min
3. If a suspended load is present, use an additional mechanical measure to block the drive
4. Activate safety function (STO-ENABLE = 0 V)
Operating Manual PMCtendo DD5
1002236-EN-04
WARNING!
Risk to life from the motor running down in an uncontrolled manner!
If the motor runs down in an uncontrolled manner, hazardous situations may
arise, which could result in serious injury and death.
Once the safety function STO has been triggered, electrical braking via the
drive is no longer possible.
If failsafe braking is required for the drive, an additional mechanical brake
must be used.
WARNING!
Risk of electrocution!
The safety function STO does not guarantee electrical isolation from the
power output.
Disconnect the servo amplifier from the mains and wait for the intermediate
circuit to discharge itself.
ENABLE
0 V
24 V
0 V
24 V
-1
, input ENABLE (X3/12) = 0 V).
Message on display Motor torque
-S-
F27
Device ID, e.g. B. 06 No
Device ID, e.g. E06
-1
(ENABLE = 0 V)
No
No
Yes
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