CASCADE SYSTEM
110
SH4 STANDARD MUTING
RESPONSE TIME
Cascade operation is composed by a serialized optic scanning of all cascade units, then
the same post-Elaboration (optic scan analysis and self-testing) of single unit operation.
Then response time can be calculated in the same way of single unit case considering
Tscan as the time to scan all cascade units (comprehensive of communication messages
for units sync purpose).
T
responceC
=3xT
scanC
+2T
post-elabC
+T
OSSD
Cascade response time can also be computed from single units' response times with fol
-
lowing formulas:
2 UNITS CASCADE: Sum of units' response times + 1ms
3 UNITS CASCADE: Sum of units' response times - 1ms
RECOVERY TIME
In cascade operation only receiver master unit synchronize with emitter master unit by
means of two sync optics and respective unique patterns, while T
SCAN
and T
SELF-TEST
depend on all units operation (see fig. 47). For what said in 4.4 recovery time is equal to
response time or 80ms whichever is greater.
SCAN1
ES
WAIT
SCAN2
WAIT
WAIT
WAIT
SCAN3
WAIT
WAIT
PE
M
P
Es
WAIT
WAIT
P
Es
Tcycle
ES
ES
ES
ES
ES
ES
ES
ES
MASTER
SLAVE1
SLAVE2
TresponceC
SCAN1
ES
WAIT
SCAN2
WAIT
WAIT
WAIT
SCAN3
WAIT
WAIT
PE
M
P
Es
WAIT
WAIT
P
Es
ES
ES
ES
ES
ES
ES
ES
ES
SCAN1
ES
WAIT
SCAN2
WAIT
WAIT
WAIT
SCAN3
WAIT
WAIT
PE
M
P
Es
WAIT
WAIT
P
Es
ES
ES
ES
ES
ES
ES
ES
ES
Tcycle
Tcycle
T
OSSD
Summary of Contents for SH4 STANDARD MUTING
Page 1: ...SH4 STANDARD MUTING PRODUCT REFERENCE GUIDE Safety Light Curtains ...
Page 13: ...COMPLIANCE PRODUCT REFERENCE GUIDE 5 ...
Page 29: ...GENERAL INFORMATION ON DEVICE POSITIONING PRODUCT REFERENCE GUIDE 21 ...
Page 33: ...PRODUCT REFERENCE GUIDE 25 ...
Page 68: ...FUNCTIONS 60 SH4 STANDARD MUTING ...
Page 77: ...SH4 X XXXX 8 X MODELS PRODUCT REFERENCE GUIDE 69 ...
Page 83: ...PRODUCT REFERENCE GUIDE 75 ...
Page 91: ...PRODUCT REFERENCE GUIDE 83 ...
Page 93: ...METAL ANGLED FIXING BRACKET PRODUCT REFERENCE GUIDE 85 ...
Page 109: ...PRODUCT REFERENCE GUIDE 101 ...
Page 119: ...PRODUCT REFERENCE GUIDE 111 ...
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