55
Transmission output (Option code: TA, TV)
Converting the value (PV transmission, SV transmission, MV transmission) to
analog signal every 125ms, outputs the value in current or voltage.
One transmission output (PV, SV, MV) can be selected by keypad.
Resolution: 1/10000
Current (TA): 4 to 20mA DC (load resistance maximum 500
)
Voltage (TV): 0 to 1V DC (load resistance minimum 100k
)
Output accuracy: Within
0.3% of Transmission output span
Serial communication (Option code: C5, C)
The following operations can be executed from an external computer.
(1) Reading and setting of the SV, PID values and various set values.
(2) Reading of the PV and action status.
(3) Function change
Communication line: EIA RS-485 (C5 option)
EIA RS-232C (C option)
Communication method: Half-duplex communication
Synchronization method: Start-stop synchronization
Communication speed: 2400, 4800, 9600, 19200bps (Selectable by keypad)
Data format Start bit: 1
Data bit: 7
Parity: Even parity
Stop bit: 1
Communication protocol: Shinko protocol, Modbus ASCII (Selectable by keypad)
(When Modbus protocol is selected, the Digital external
setting can not be used.)
Digital external setting: Receives digital set value from Shinko Programmable
controller PC-900, PCD-33A (with SVTC option).
Set value memory number external selection (Option code: SM)
Selects the Set value memory number from 7 files (the below-mentioned data as one
file) by external terminals:
SV, OUT1 proportional band, Integral time, Derivative time, OUT2 proportional
band, A1 value, A2 value, Overlap/Dead band, OUT1 high limit value, OUT1 low
limit value, OUT2 high limit value, OUT2 low limit value
Memory number: 1 to 7 (7 files)
Data: 12
External setting input (Option code: EA, EV)
SV can be set by External analog signal.
Setting signal : Direct current [EA]
0 to 20mA DC, 4 to 20mA DC
Allowable input current: 100mA DC or less
Input impedance, 50
(non-isolated from input)
: DC voltage [EV]
0 to 1V DC, 1 to 5V DC
Allowable input voltage: 0 to 1V DC: 5V DC or less
Input impedance, 100k
(non-isolated from input)
Setting signal sampling period: 500ms
(If this External setting input is ordered, the input sampling period also changes
to 500ms.)
Heater burnout alarm (Option code: W, W3)
Watches the heater current with CT (current transformer), and detects the burnout.
• For the direct current output type, this option cannot be ordered.
• If this option is ordered, the input sampling period also changes to 500ms.
Rated current: 20A [W (20A), W3 (20A) option] or
50A [W (50A), W3 (50A) option] Must be specified