18

S8AS

Test Mode

Device startup operation can be tested by turning ON/OFF branch

outputs either individually or together. The branch outputs that are to

be used are set to be connected in Test Mode. The operation to turn

all branch outputs ON/OFF together can be used to check startup and

shutdown sequences.

Note: 1. In Test Mode, the branch output number indicators and 7-

segment display will continue to flash.

2. In Test Mode, the abnormal tripping output (TRP) will

operate if one or more of the branch outputs are not

connected. The TRP output will not operate if the operating

mode is changed.

3. If power is turned OFF in Test Mode, Test Mode will be

entered the next time power is turned ON.

Protection Level Setting

A protection level can be set to prevent operating errors during normal

operation. Reading or changing parameter settings and other

operations can be restricted in three levels.

Select PRT (protection level) from the Mode Selection Menu and then

perform the following procedure. (The following example shows

changing to protection level 0.)

Parameter Initialization

All S8AS parameters can be restored to their default settings.

Set protection level 0 and then go to the Mode Selection Menu. INI

(parameter initialization) will be added to the menu. Select INI and

then perform the following procedure.

Note: 1. The Mode Selection Menu is not displayed in protection

level 1 or 2. The default setting is for protection level 1.

2. Default Settings

• The operating mode will change to Run Mode.

• The parameters will change to their default settings.

• All branch outputs will be changed so they are connected.

• The protection level will change to level 1.

Test Mode (TST) Selected

(1)

(2)

(3)

(5)

(4)

Press for 3 s.

Yrs

A

5

4

3

2

16

V

s

°C

5

4

3

2

16

Yrs

A

5

4

3

2

16

V

s

°C

5

4

3

2

16

Yrs

A

5

4

3

2

16

V

s

°C

5

4

3

2

16

Yrs

A

5

4

3

2

16

V

s

°C

5

4

3

2

16

Select TST (Test Mode) from the Mode Selection Menu and press the ENT Key.

Test Mode will be entered.

(1) When Test Mode is entered, the branch output number 1 indicator (see note) will flash and

“OFF” or “ON” will flash on the 7-segment display.

OFF flashing: Press the ENT Key to turn OFF branch output 1.

ON flashing: Press the ENT Key to turn ON branch output 1.

(2) The branch output can be selected at display (1) by using the Down (CH) Key.

Press the ENT Key to turn the output ON and OFF.

(3) If the Up (SEL) Key is pressed at display (1), all branch output number indicators will flash

and “OFF” will flash on the 7-segment display. All branch outputs can be turned OFF in this

condition.

Press the ENT Key to turn all branch outputs OFF.

(4) If the Up (SEL) Key is pressed at display (3), all branch output number indicators will flash

and “ON” will flash on the 7-segment display. All branch outputs can be turned ON in this

condition.

Press the ENT Key to turn all branch outputs ON.

(5) After completing ON/OFF testing and setting the branch outputs, press the Up (SEL) and

Down (CH) Keys simultaneously for 3 s to go to the Mode Select Menu, and then enter Run

Mode.

* The branch output number set with the Down (CH) Key will not change even when the

operating mode or parameters are changed. The branch output displayed when Test Mode is

entered will not necessarily be branch output 1.

Indicator Status Notation

Lit

Flashing

Protection

Level

Intended for

Possible operations

0

Facility designers

and manufacturers

All settings can be read and

changed.

1

Facility

maintenance

personnel

Some settings can be read and

changed.

2

On-site operators

Settings can be read but not

changed.

Setting Protection Level

Mode Selection Menu

(Protection Level)

After no key operations for 3 s

After no key

operations

for 3 s

Parameter Initialization

Mode Selection Menu

(Parameter Initialization)

Setting Confirmation

(Flashes for 3 s.)

After no key

operations

for 3 s

Run Mode