9
LH 5946 / 130910 / 363
main features
•
According to
- Performance Level (PL) e and category 4 to En ISO 13849-1: 2008
- SIL Claimed Level (SIL CL) 3 to IEC/En 62061
- Safety Integrity Level (SIL) 3 to IEC/En 61508 and IEC/En 61511
•
Safe standstill detection on 3- and single-phase motors
•
No external sensors necessary
•
Independent of direction
•
Broken wire detection
•
Forcibly guided safety contacts:
3 NO contacts, 1 NC contact for AC 250 V
•
2 semiconductor monitoring outputs
•
1 monitoring output (NO contact)
•
Adjustable voltage setting
•
Adjustable standstill time delay
•
LED indicators for standstill, event of line breakage and operation voltage
•
suitable for operation with inverters
•
Removable terminal strips
- LH 5946:
fixed screw terminals
- LH 5946 PS:
plug in screw terminals
- LH 5946 PC:
plug in cage clamp terminals
Connection terminals
Terminal designation
Signal designation
L1 - L2 - L3
Connection to monitored motor
11 - 12
Safety contacts (NC)
23 - 24, 33 - 34, 43 - 44 Safety contacts (NO)
53 - 54
Monitoring contact (NO)
X1 - X2
Connection of feedback circuit
(for external contactors)
X2 - X3
Manual reset for external faults
A1 - A2
Auxiliary supply (U
H
)
A3(+) - A4
Supply for semiconductor outputs
ON:
Semiconductor output indicates state
of safety contacts
ERR:
Semiconductor output indicates failures
Attention: The outputs 53-54, On and ERR are only monitoring outputs
and must not be used in safety circuits!
Poti „U
an
“:
Adjustment of voltage level for standstill detection
Poti „t
s
“:
Adjustment of time delay before activation
of safety contacts
Setting
Function diagramm
A3-ERR
23-24
33-34
43-44
53-54
A3-ON
A1/A2
H
U
stop
reset
X3
-X
2
reset
X3
-X
2
line
br
eakag
e
line
br
eakag
e
standstill
detected
motor
runs
down
motor
runs
down
Motor
Ein
motor
on
auxiliary
voltag
e
on
L1/L2/L3
L1/L2/L3
motor speed /
voltage
line breakage
M9647_b
start up delay time UH
t =2...2,5s
E
voltage level
Uan
standstill delay time ts
t
E
t
E
11-12
t
Indicators
green-red LED „UH“:
green on, when operation
red on, with internal error
yellow-green LED „OUT“:
yellow on, at EMK > U
an
flashes green at time progression of t
s
permanent on, when output contacts
are enable
red LED „ERR“:
flashes at error in measuring and
feedback circuit and low auxiliary
voltage U
H
(see flashing codes)
Flashing codes 1 ... 5 of the LED „ERR“ in sequence of priority
Flashing codes for failure indication
simultaneity failure
signal L2/L3
t
failure in feedback
circuit X1-X2
undervoltage
at U
H
wire-break/offset
on L3
wire-break/offset
on L2
M9648_a
