Omega CN154, CN155, CN158, CN159 manual Instruction for screen change and each screen, Basic screen

4-4. Instruction for screen change and each screen

Note: In the following, the	mark	ENT key
indicates that the key above		5 seconds
the mark should be pressed.

MODE 1 Screen Group

Mode 0 Screen Group	key
	3 seconds
0-0
Basic screen
SV initial value:	lower limit of measuring range
Setting range:	within measuring range

Upper row displays measured value (PV) and lower row displays and changes the set value (SV). Refer to Item 5-1 for detail.

0-1

1-0

1-1

Direct call screen (screen No.0)

Initial value: 0

Setting range: 0~19

Set the screen No. to move the screen of the mode 1 screen group. Refer to Item 4-3 (4) for detail.

The screen with no display condition is skipped.

Set value bias set screen (screen No.1)

Initial value: 0

Setting range: -1999~2000 unit

0-2

Control output screen

Initial value for manual operation:

The value immediately before switched to manual Setting range for manual operation: 0~100%

The measured value (PV) is displayed on the top and the control output value on the bottom. Pressing the MAN key on this screen switches auto to manual and vice versa. Refer to Item 4-6 (1) for detail.

Control execution/stop selecting screen

Initial value:	EXEC
Setting range:	EXEC, STBY

1-2

P ≠ OFF

Displays in the case with set value bias option. The set value is effective during shorted SB terminal, and is added to the set value. While it is valid, the leftmost point on the bottom row stays lit on each displayed screen, excluding the input scaling setting screen.

Proportional band set screen (screen No.2)

Initial value: 3.0%

Setting range: OFF, 0.1~999.9%

Refer to Item 6-2 (1) for proportional band.

Select “OFF” to perform ON/OFF action.

STBY, MAN, For ON/OFF

0-3

Execution ( ) or stop ( ) of control is selected.

Refer to Item 4-6 (2) for detail.

P=OFF

1-3

Action hysteresis set screen (screen No.3)

Initial value: 3 or 0.3

	AT (auto tuning) action control screen
	Initial value: OFF
	Setting range: OFF, ON
	For “ON” selection, AT is executed and for “OFF” selection, AT is
	cancelled.
No option	Refer to Item 5-2 for detail. This screen appears only during ON/OFF
	operation; it does not appear when control is suspended or during
0-4	manual output.
	Higher limit alarm set screen

Setting range: 1~999 unit

Set ON/OFF hysteresis on ON/OFF action.

This screen appears only when P=OFF.

1-4

Integral time set screen (screen No.4)

Initial value: 120 seconds

Setting range: OFF, 1~6000 seconds Refer to Item 6-2 (2) for integral time.

Not shown on ON/OFF action. Selection of OFF starts P or PD action.

1-5

Initial value:	Absolute value alarm:
	higher limit for the measuring range
	Deviation alarm: 2000 unit
Setting range:	Absolute value alarm: within measuring range
	Deviation alarm: 0~2000 unit
Displays except the case with alarm option and the alarm type of the
function selecting screen of mode 2 screen group is not specified.
Refer to Item 5-3 (1) for detail.
0-5
Lower limit alarm set screen
Initial value:	Absolute value alarm:
	lower limit for the measuring range
	Deviation alarm: -1999 unit
Setting range:	Absolute value alarm: within measuring range
	Deviation alarm: -1999~0 unit

Displays in case with alarm option and the alarm type of the function selecting screen of mode 2 screen group is higher limit and lower limit. Refer to Item 5-3 (2) for detail.

0-6

Heater break alarm value set screen

Initial value: OFF

Setting range: OFF, 0, 1~50.0A or OFF, 1~500A

Displays in the case with heater break alarm option and alarm type of the mode 2 screen is higher limit+heater break.

Refer to Item 5-3 (3) for detail.

Upper row displays load current detected by CT.

(If the output is OFF, it shows )

NOTE: The heater break alarm can be added if the instrument has alarm option and the control output is the contact type or the SSR drive voltage type.

Heater break alarm

•Set the alarm level at approx. 85% of the normal load current. In case of large current variation, set larger value.

If multiple heaters are connected in parallel, set a larger value to output alarm for single heater

break.

• If “ ” is selected, no alarm output is obtained. Selecting “ ” during alarm output, the alarm output is canceled.

•	For case when heater break function is not applicable to direct current load, phase controlling
	current and three phase heater.
•	Connecting current transformer (CT)

I ≠ OFF

I=OFF

1-6

1-7

1-8

1-9

1-10

Derivative time set screen (screen No.5)

Initial value: 30 seconds

Setting range: OFF, 1~3600 seconds

Refer to Item 6-2 (3) for derivative time.

Not shown on ON/OFF action.

Selection of OFF starts P or PI action.

Manual reset value setting screen (screen No.6)

No.6 Initial value: 0.0%

Setting range: -50.0~-50.0%

Offset is adjusted when I=OFF (P or PD action) is selected. For details of manual resetting, refer to Item 4-6 (3).

This screen appears only when 1=OFF has been selected.

Set value function set screen (screen No.7)

Initial value: 0.40

Setting range: OFF, 0.01~1.00

Used for suppressing overshooting and undershooting in expert PID. For SF=1.00, minimize overshooting, for SF=OFF, expert PID is unable to be normal PID action. This screen does not appear when P=OFF or I=OFF.

PV bias value set screen (screen No.8)

Initial value: 0 or 0.0

Setting range: -200~200 unit

Used for sensor input error compensation.

Controlling is performed with corrected value for bias setting.

PV filter time set screen (screen No.9)

Initial value: 0 second

Setting range: 0~100 seconds

Used for the case of large input change and noise overlapping to reduce the effect.

Key lock mode set screen (screen No.10)

Initial value: OFF

Setting range: OFF, 1, 2, 3

No data change is effective on the display screen locked.

Nevertheless, the direct call screen and the keylock mode setting screen are not locked by setting any lock No.

One of the load line wires passes through the hole of the custom CT.

Wire from the secondary side terminal of CT to the CT input terminal of the instrument.

To CT input terminal of	NOTE: Two types of the heater break
controller (no polarity)
	CT of 30A and 50A are available, the
	type selected upon ordering is shipped
	with the product as an accessory. Note
	the maximum current to be set is 50.0A
Heater (load) wire	for both types. CT is not provided when
	0~500A is designated.

Lock Nos. and Ranges to be locked are as follows:

Lock No.	Range of Screens to Be Locked
OFF	Release of lock

1Other screens than basic, control output,

AT action control and communication mode screens

2All except basic screen

3All screens

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