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Safety function blocks
510
02/16 MN05013001Z EN
e
Contact ZM..QS: When the parameterized rotary frequency
reaches or falls below this value, this contact closes.
Used only in the safety circuit diagram.
f
Contact ZM..ER: Closes in the event of an error.
Use in the safety and in standard circuit diagram. In a fault
scenario the contact TS..QS stays open.
g
Actual value output DG..QV: Indicates the current actual value
of the rotation frequency.
Indicated on the device or in easySoft-Safety.
h
Diagnostics output ZM..DG: Provides information on the states
of the function block.
Evaluation only in the standard circuit diagram with the diag-
nostics function block DG.
Wiring of the function block
The relay uses different coils and contacts.
Coils ZM..RE and ZM..SA allow an internal association inside
the safety circuit diagram. Example of a function block for
zero speed monitoring:
h
The rotation frequency input coils of the ZM function block
are connected directly with the device inputs IS1 and IS2
so that the rotary encoders are always connected here and
no function block wiring is required.
j
Danger!
Two static High signal levels at device inputs IS1 and IS2
are always regarded as standstill by the easySafety device;
contact ZM01QS is not switched off.
This behaviour applies also to two static Low signal levels
if these are applied to IS1/IS2 immediately after a change
to operating mode RUN and until the first Low-High edge
is detected.
h
easySafety enables the simultaneous operation of both
function blocks for zero speed and overspeed speed moni-
toring using the same sensors.
Содержание easySafety
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