WIKA CS4S - Manual (Page 31)

Operating Instructions Temperature Indicating Controller CS4S
V1.1
•
10/2006 - 31 -
[Burnout]
When the thermocouple or RTD input is burnt out, OUT1 and OUT2 are turned off (for Control output
analogue current signal: OUT1 low limit value, OUT2 low limit value) and PV display blinks “
”.
[Self-diagnosis]
The CPU is monitored by a watchdog timer, and when any abnormal status is found on the
CPU, the controller is switched to warm-up status.
[Automatic cold junction temperature compensation] (Only thermocouple input type)
This detects the temperature at the connecting terminal between the thermocouple and the instrument,
and always keeps it set to the same status as when the reference junction is located at 0 °C (32 °F).
[Power failure countermeasure]
The setting data is backed up in the non-volatile IC memory.
[Warm-up indication]
After the power supply to the instrument is turned on, the sensor input character and temperature unit
are indicated on the PV display and rated scale high limit value is indicated on the SV display for 3
seconds.
For DC current and voltage inputs, the scaling high limit value is indicated.
Accessories included :
Screw type mounting bracket 1 set, Instruction manual 1 copy
CT (Current transformer) CTL-6S
1 piece (for rating 5 A, 10 A, 20 A)
CTL-12-S36-10L1 1 piece (for rating 50 A)
9.2 Optional specifications
Alarm output 2 (A2) process value monitoring [option codes: 2AS or 2AL]
When the option [2AL] process value and loop monitoring is selected, the output terminal is common.
Action : ON/OFF action
Hysteresis : 0.1 … 100.0 °C (°F) or 1 … 1000
Output
: Relay contact 1a
Control capacity 3 A 250 V AC (Resistive load)
Electrical life 100,000 times
Alarm output 2 (LA) Loop break alarm [option codes: 2AR or 2AL]
When MV (manipulated variable) is maximum or minimum and when the PV does not change as much as
the preset span within the Loop break alarm assessment time, the alarm is activated.
This also detects the breaking status on the loop such as heater burnout, sensor burnout or actuator
trouble.
When the option [2AL] process value and loop monitoring is selected, the output terminal is common.
Setting range : Loop break alarm action time 0 … 200minutes
Loop break alarm action span 0 … 150 °C (°F), 0.0 … 150.0 °C (°F), 0 … 1500
Output : Relay contact 1a
Control capacity 3 A 250 V AC (Resistive load)
Electrical life 100,000 times
Heater burnout alarm (including sensor burnout alarm) [option codes: W10, W11, W12, W15]
Monitors heater current with CT (current transformer), and detects burnout.
The output terminals will be common if the options [2AS],[2AL] or [2AR] are applied with it.
This option cannot be applied to Control output analogue current signal.
Rating
: 5 A [W10], 10 A [W(11)], 20 A [W12], 50 A [W15] (Must be specified)
Setting range : 5 A [W10], 0.0 … 5.0 A (Off when set to 0.0)
10 A [W11], 0.0 … 10.0 A (Off when set to 0.0)
20 A [W12], 0.0 … 20.0 A (Off when set to 0.0)
50 A [W15], 0.0 … 50.0 A (Off when set to 0.0)
Setting accuracy : Within ±5 % of the rated value
Action
: ON/OFF action
Output : Relay contact 1a
Control capacity 3 A 250 V AC (resistive load)
Electrical life 100,000 times