Red Lion PCU - Manual (Page 79)

Slidewire exciting voltage : 0.9 VDC typ.
Slidewire fail action : programmable
Control mode : Position mode (with slidewire) and
Velocity mode (w/o slidewire)
Control deadband : 0.1% to 25.0% (position mode)
0.1 to 25.0 seconds (velocity mode)
Update time : 1 to 250 seconds
Motor time (open, close) : 1 to 9999 seconds
Position limits : Adjustable 0.0 to 100.0% of valve stroke
Valve fail time : Off to 9999 seconds
Alarm mode : Dual acting; loss of slidewire feedback signal and valve fail
detection
11. SECOND ANALOG INPUT:
Range : 0-20 mA (Isolated from main input)
Overload : 100 mA
MIN
(steady state)
Input Resistance : 10 W typ. Voltage drop (@ 20 mA); 0.2 V typ.
Accuracy : 0.15% of reading ±10 mA ± 1 LSD
Scale Range : -999 to 9999
12. SERIAL COMMUNICATION:
Type : RS485 Multi-point, Balanced Interface
Communication Format :
Baud Rate : Programmable from 300 to 9600
Parity : Programmable for odd, even, or no parity
Frame : 1 start bit, 7 data bits, 1 or no parity bit, 1 stop bit
Unit Address : Programmable from 0 to 99, max. of 32 units per line
Transmit Delay : 100 msec min., 200 msec max.
RS485 Common : Isolated from signal input common
Auto Print Time : Off to 9999 seconds between print-outs
13. USER INPUT (Optional): Internally pulled up to +5 VDC.
V
IN
= 5.25 VDC
MAX
; V
IL
= 0.85 V
MAX
; V
IH
= 3.0 V
MIN
Available on all second input (MVP and ANA) models and on models with
RS485.
Response time
: 100 msec max.
Functions :
Program Lock Integral Action Lock
Auto/Manual Mode Select Reset Alarms
Setpoint Ramp Select Local/Remote Setpoint Select
Print Request
14. ALARMS (Optional):
Hardware : Plug-in, replaceable output module
Modes : Absolute high acting Absolute low acting
Deviation high acting Deviation low acting
Inside band acting Outside band acting
Valve fail Second Analog Input monitoring
Reset Action : Programmable; automatic or latched
Standby Mode : Programmable; enable or disable
Hysteresis : Programmable
Signal Overdrive Action : Upscale
Annunciator : LED backlight for “AL1”, “AL2”, (Alarm #2 not available
with secondary output or motorized valve position option.)
15. ENVIRONMENTAL CONDITIONS:
Operating Range : 0 to 50°C
Storage Range : -40 to 80°C
Vibration According to IEC 68-2-6 : Operational 5 to 150 Hz, in X, Y, Z
direction for 1.5 hours, 1 g.
Shock According to IEC 68-2-27
: Operational 5 g's, 11 msec in 3
directions.
Span Drift
(maximum): 100 ppm/°C, main input; 150 ppm/°C, second input
Zero Drift (maximum):
4 to 20 mA DC Range : 0.5 mA/°C
0-10 VDC Range : 0.2 mV/°C
Second Input : 2 mA/°C
Relative Humidity : Less than 85% RH (non-condensing) from 0°C to 50°C.
Altitude : Up to 2000 meters
16. ISOLATION BREAKDOWN RATINGS:
All inputs and outputs with respect to AC line : 2300 V
MIN
Analog Output, Second Analog Input, or Slidewire Input with respect
to Main Input
: 500V
MIN
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