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ZM, zero (standstill) moni-
toring
509
02/16 MN05013001Z EN
ZM, zero (standstill) moni-
toring
The zero monitoring function block is used where entry or
access to the hazardous area is only permissible when the
machine has come to a standstill. The function block does
not enable access until the connected rotary encoder indi-
cates the standstill of the machine.
The function block always operates with 2 rotary encoders.
A easySafety device can monitor the standstill of a shaft or a
motor.
Function block
Figure 269:
Zero speed monitoring function block
a
Coil ZM..SA: Safety activation of the function block. (use
mandatory).
Use only in the safety circuit diagram.
b
Coil ZM..RE: Reset of the function block in the Manual Start
(MST) and Controlled Start (CST) mode and the starting of
normal operation.
Use only in the safety circuit diagram.
c
Coil ZM..EN: Selective activation or deactivation of the function
block function (optional).
Use either in the safety or standard circuit diagram.
d
Parameter ZM..FR: When the rotary frequency reaches or falls
below this value, a standstill is signaled.
Can be used as an adjustable constant.
SA
RE
EN
>FR
QS
ER
DG:
QV:
ZM...
Standstill Monitor
DW
Hz
a
b
c
d
e
f
g
h
Содержание easySafety
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