Toshiba nv Series - 2.3 Grounding of the Controller and I;O Units

Appendix A PI918 hardware specifications
6F8C1370
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A PI918 hardware specifications
(1)Externalspecifications 
Item Description
Petname PI918
Numberofinputchannels 1phase8ch(insulation,with
g
ateinput)
Inputsi
g
nal 12to24Vvolta
g
epulse(9.6to26.4V)
Counter 15bit  upcounter(0to32767)
Inputcurrent 8to12mA(12to24V)
Ran
g
eofnumberofinput
frequency
DC,50kHz(inputfilterlowspeed:DC,50Hz)
Minimumpulsewidth 9μs(inputfilterlowspeed:9ms)
Pulsethresholdlevel 4to8V(betweeninputterminals)
Commonsettin
g
(parameter) (1) Inputfilter:hi
g
hspeed
/
lowspeed
(2)Internalreferencepulse:100Hz,1kHz,10kHz,50kHz
(3)Speed(frequency)measurementcycle: 
0.1s,0.2s,0.5s,1s

(4)Externalgatecontrolprohibition/permission
Settin
g
foreachchannel
(parameter)
Soft
g
atecontrol,comparisonfunction,frequenc
y

counter,pulsewidthmeasurement,master/slave
counter
,
pulseinternal/externalselection
Modulestatedispla
y

RUN displa
y
(
g
reen), ALM displa
y
(red),externalinput
display(green)
Faultdia
g
nosis Transmission
Currentconsumption Internal:24VDC- 100mA orless
Internalheat
g
enerated 7W orless
Allowableshortinterruption Continuousoperationfor1msorless
Insulatin
g
resistance
10MΩ ormore (betweenexternalcircuitandinternal
circuit)
Withstandvolta
g
e
500
V
AC,1 minute (betweenexternalcircuitand
internalcircuit)
Externalconnection BU902,BU902A
Outsidedimensions andwei
g
ht 35Wx185Hx95D,200
g
orless
Circuitconfi
g
uration

P1P
P1N
Constant current photo-coupler insulation input circuit
G1P
G1N
LED display
RS485
transceiver
RS485
transceiver
Power supply
circuit
Redundant I/O bus
System power supply
I/O connecter
Internal circuit
(Fenix3 etc.)
Pulse number
count
CPLD
Power supply for logic circuit
I/O connec ter
P8P
P8N
G8P
Pulse
Gate
G8N