Process - Siemens Pointek CLS 200 Instruction Manual

Alarm Output
The relay and solid-state switch are connected, and provide the alarm output:
Alarm OFF
Alarm ON
Alarm Output Status
There are two alarm options:
Low
Alarm (level too low)
High
Alarm (level too high)
a.
The manual assumes that the pump should be turned off in the event of a failure. If
this is not the case in your process, please see the relay schematic below, and make
the appropriate connections to suit your application.
Failsafe
The Failsafe function controls the response of Pointek CLS 200 to a fault so that the
process will be put into a safe mode of operation. (See
further details). Failsafe and Alarm mode are interconnected:
• High Alarm/Failsafe High
• Low Alarm/Failsafe Low
Relay and solid-state switch functionality
Alarm Dip
Mode Switch
S3
Failsafe
ON
High
S3
Failsafe
Low
OFF
Page I – 20 Pointek CLS 200 (analog) – INSTRUCTION MANUAL
Relay Solid-state switch Output status/Red LED
energized
de-energized
Probe Relay
uncovered
de-energized
covered
de-energized
Covered Probe
3 2
1
K2
relay
3 2 1
K2
relay
closed
open
Solid-state
switch
a
open
a
open
Fault Signalling
Uncovered Probe
L2
(unlit)
2 1
3
K3
switch relay
L2
(lit)
2 1 3
K3
switch
relay
lit
unlit
Output status/
Red LED
unlit
unlit
on page 13 for
L2
(lit)
2 1 2 1
K2 K3
switch
L2
(unlit)
2 1 2 1
K2 K3
switch
7ML19985AR02