Viconics C1025 - Manual

LIT-C1025-E03 1
ELECTRONIC THERMOSTAT: C1025
FOR MODULATING
ELECTRIC HEAT APPLICATIONS
0 to 10 Vdc modulating output
Vdc pulsed modulating output
Room or supply control applications
DESCRIPTION
The C1025 series thermostats are microcomputer-based,
proportional and integral (PI) devices with one analog 0 to 10
Vdc output and one Vdc time proportioning pulsed output.
The analog 0 to 10 Vdc modulating output can control the
room or supply temperature by modulating directly a 0 to 10
Vdc SCR power controller.
The Vdc pulsed output can control the room or supply
temperature by modulating directly 4-32 Vdc triggered solid
state relays ( SSR’s ) using a time proportioning control
algorithm on a 1 second time cycle.
The thermostats also contain two dip switch which adjust the
following parameters :
• Room or supply control applications
• Internal or external remote sensor
Type of output Modulating devices for heating
Modulating analog
0 to 10 Vdc output
SCR’s power controls
Vdc pulsed output 4-32 Vdc triggered SSR’s
HOW TO ORDER
C1025 -
↓
01 = °F scale
↓
02 = °C scale
Notes: Order remote S61 sensors separately.
Vertical covers are standard.
DIMENSIONS
SPECIFICATIONS
Operating Conditions: -30 °C to 50 °C ( -22 °F to 122 °F )
0% to 95% R.H. non-condensing
Sensor: Local 47 K NTC thermistor
Resolution: ± 0.1 °C ( ± 0.2 °F )
Control accuracy: ± 0.2 ° C ( ± 0.4 °F ) ( calibrated )
Ranges: C1025-02: 10 °C to 32 °C
C1025-01: 50 °F to 90 °F
Proportional band for room
temperature control ( S1 = 0 ): 1.8°C ( 3.2°F )
Proportional band for supply
temperature control ( S1 = 1 ): 28°C ( 50°F )
Analog 0 to 10 Vdc output: 0 to 10 Vdc into 2K Ω resistance min.
5 mA max at 10 Vdc
Vdc pulsed output: 20 mA max at 8 Vdc.
Power: 24 Vac -15%, +10% 50/60 Hz; 2 VA
32 mm
( 71 mm )
2.8"
1.275"
( 83 mm )
3.275"
SECURITY SCREW
OR FROM BACK
FROM TOP
WIRING
BASE
( 114 mm )
4.5"
50
70
60
90
80
F