Phoenix Contact PSRmodular - Figure 5-118 GUARD-LOCKING Example in Mandatory Safety Door Opening Operat- Ing Mode

PSRmodular system
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PHOENIX CONTACT 109241_en_03
“Mandatory safety door
opening” operating mode
Figure 5-118 “GUARD-LOCKING” example in “Mandatory safety door opening” operat-
ing mode
The “Gate” input must be connected to a “GUARD-MONITORING (2CH)” function block
(see section “GUARD-MONITORING” (device for movable guards)), which detects the po-
sition of the safety door.
The “L
OCK_FBK” input must be connected to a “LOCK FEEDBACK” function block (see sec-
tion “LOCK FEEDBACK”), which detects the status of the guard locking pin.
The “U
NLOCK_CMD” input can be connected as desired in the circuit diagram and controls
the guard locking device (when at logic “1”).
The “OUT” signal is at logic “1” when the safety door is closed and the guard locking device
is in the locked position. If an enable command is applied to the “U
NLOCK_CMD” input, the
“O
UT” signal is set to logic “0” and the guard locking device is enabled with the “LOCKOUT”
signal.
The “O
UT” signal can also assume the value logic “0” if error conditions are present (e.g.,
door open when interlock is blocked, feedback time is above the maximum permissible
time, etc.).
As soon as the “U
NLOCK_CMD” enable signal is present, the “LOCKOUT” signal is controlled
after the parameterized “U
NLOCK” time has elapsed.
Taking the “Feedback Time” parameter into consideration, the discrepancy time between
the control of the guard locking device and the “L
OCK_FBK” feedback signal can be param-
eterized.
Feedback time ≥ Activation time of the electromagnets
– In this case, the user must select the “Mandatory Gate opening” parameter.
– In this operating mode, the safety door (“G
ATE”) must always be opened after the de-
mand to unlock the guard locking device and it must be closed again before the block
enable (“O
UT”) can be issued again.