Hitachi P1-00080-L Basic Manual page 39

Chapter 2
■Functional safety STO terminals
 Refer to the "Functional Safety Guide"
for using a safety functions.
Terminal Terminal name
label
24V output power source
P24S
terminal
COM terminal for
CMS
functional safety
STC Logic switching terminal
ST1 STO input1
ST2 STO input2
Output terminal for
ED+
monitoring
Output COM terminal for
ED-
monitoring
■FM output terminals
(Wiring example)
Digital output
FM
Frequency meter
(PWM)
Terminal
label
FM
CM1
Description
Refer to the appended
"Functional Safety
Guide" for details.
CM1
Terminal name
Digital monitor output is selectable from PWM
Digital monitor
output with 6.4ms cycle or pulse output with a
(voltage)
variable duty cycle of approx. 50%.
COM for digital This is a common terminal for digital monitor.
monitor This is also used as 0V reference potential for P24.
Control circuit terminal
Safety confirmation
terminal
ED- ED+
Control circuit terminal
•
FM output is selectable from PWM output with a fixed cycle of
6.4ms or pulse output with a variable cycle.
•
FM output is adjustable by parameter settings.
Description
2-21
Installation and Wiring
STO Safety terminal
ST2 STC ST1
P24S STC CMS
Electric characteristics
Pulse train output DC0 to 10V
•
Max. allowable output current
1.2mA
•
Maximum frequency 3.60kHz