Alarm Output Status; Definitions - Siemens Pointek CLS100 Operating Instructions Manual

Connecting

3.4 Alarm output status

3.4 Alarm output status
Alarm Status
high
(fail-safe)
high
(non fail-safe)
low
(fail-safe)
low
(non fail-safe)
Solid State Switch (SSS)
1)
3.5

Definitions

The alarm conditions below can be detected in a fail-safe or non fail-safe mode.
Fail Safe
• The sensor connection arrangement is fail-safe if the output status is in high alarm status
when power fails; open contact state prevents material overflow.
• The sensor connection arrangement switches to the fail-safe low alarm status when
power fails; this open contact state prevents material running dry.
High Alarm
When material reaches a maximum process level, covering the probe.
Low Alarm
When material reaches a minimum process level, uncovering the probe.
10
Covered
Yellow LED ON
red LED OFF
4 mA
SSS = open
1)
red LED ON
20 mA
SSS = closed
red LED ON
20 mA
SSS = closed
red LED OFF
4 mA
SSS = open
Compact Operating Instructions, 05/2021, A5E32146158-AB
Uncovered
Yellow LED OFF
red LED ON
20 mA
SSS = closed
red LED OFF
4 mA
SSS = open
red LED OFF
4 mA
SSS = open
red LED ON
20 mA
SSS = closed
Power Connection
black wire + V
red wire + V
red wire + V
black wire + V
Pointek CLS100