Precision Digital PD540 - Manual (Page 10)

Analog Outputs
OUTPUT RANGE Continuous PID or retransmitting: 4-20 mA (600
Ω maximum)
Time Proportional PID: 15 VDC pulse (600
Ω minimum,
current limited at 30 mA) high, less than 0.1 VDC low, cycle
time 1 to 300 seconds, user selectable
SCALING RANGE Retransmitting 4-20 mA outputs can be scaled for any
display range low and high
ACCURACY +0.1% of full scale
Digital Inputs
CONFIGURATION Two contacts, two operating modes
CONTACTS Normally open switches (external excitation not required)
or open collector transistor
OPEN CIRCUIT Approximately 5 VDC
VOLTAGE
LOGIC LEVELS LO = 0 to 0.8 VDC, HI = 4.7 to 28 VDC
OPERATION MODES Mode 1: Control output run/stop, selection of set point1 or 2
Mode 2: Selection of set points 1 to 4
Serial Communications
PROTOCOLS Modbus (ASCII, RTU), PC software,
Sync (master/slave SP control)
UNIT ADDRESS 1 to 99 (Max 31 units connected)
BAUD RATE 600, 1200, 2400, 4800, 9600, 19200 bps, user selectable
RESPONSE TIME 0 to 100 ms delay response time
10 ms increments user selectable
DATA 7 or 8 bit user selectable
PARITY None, even, or odd
Approvals
UL RECOGNIZED USA and Canada
Process Control Equipment
UL FILE NUMBER E244207
CE COMPLIANT
PD540 Series Nova Digital Process and Temperature Controller Instruction Manual
10