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10
Description of Safety Functions
Section 1-4
1-4-2
Safety Inputs
Safety Inputs with Test Pulses (Input Circuit Diagnosis)
A test output is used in combination with a safety input. Specify the corre-
sponding test output terminal to use as the test source. The test output termi-
nal is used as a power supply to connect an external input device to the safety
input terminal.
A test pulse is output from the test output terminal to diagnose the internal cir-
cuit when the external input contact turns ON. Using this function, short-cir-
cuits between input signal lines and the power supply (positive side), and
short-circuits between input signal lines can be detected.
V V 0 1 2 3 4 5 6 7
G G T0 T1 T0 T1 T0 T1 T0 T1
Example: DST1-ID12S-1
24 V
Here, IN0 and T0 are used in combination,
24 V DC output with test pulse
External contact
Safety input
terminal
External contact
T0
IN0
24 V
0 V
24 V
External contact
T1
IN1
Short-circuit between input signal line and
power supply (positive side)
Short-circuit between input signal lines
V
G
Содержание DST1-ID12SL-1
Страница 1: ...OPERATION MANUAL Cat No Z904 E1 06 DeviceNet Safety DST1 series Safety I O Terminals...
Страница 2: ......
Страница 3: ...DST1 series Safety I O Terminals Operation Manual Revised June 2011...
Страница 4: ...iv...
Страница 10: ...x...
Страница 14: ...xiv...
Страница 110: ...86 Remote I O Allocations Section 3 2...
Страница 116: ...92 Indicators Section 4 2...
Страница 134: ...110 DST1 XD0808SL 1 Section 5 4...
Страница 146: ...122 Maintenance Section 7 4...
Страница 159: ...135 Logic Terminal Wiring Examples Section 8 3...
Страница 160: ...136 Logic Terminal Wiring Examples Section 8 3...
Страница 178: ...154 Index...
Страница 181: ...157 Revision History...