COMECO CT03 User manual
WARRANTY
__________________ ______________________
production date warranty card number
Product: Two-period multifunctional timer
Model: CT03
Output K1: EMR - 5A/250VAC open collector NPN - 40mA/40V
for external SSR - 50mA/12(24)V
Output K2: EMR - 5A/250VAC open collector NPN - 40mA/40V
for external SSR - 50mA/12(24)V
Power supply voltage: 230 VAC 110 VAC 90…250 VAC/DC
9…12 VAC 12…24 VAC/DC . . . . . . . . . . . . . . . . . . . . .
Serial No . . . . . . . . . . . . . . . . . . . . Quality Control Passed:. . . . . . . . . . . . . . . . . . . .
(signature, stamp)
SPECIFICATIONS
Digital display 3-digit LED, 9mm
LEDs 2 LEDs for relay control
Accuracy ±0.02% from span
Operating temperature / humidity 0÷50°C / 0÷85% RH
Storage temperature / humidity -10÷70°C / 0÷95% RH
Protection: front / terminals IP54 / IP20
Consumption Max. 2 VA
Warranty: Comeco warrants this product to be free from defects in materials and workmanship for one year. If your Comeco unit is
found to be defective within that time, we will promptly repair or replace it. This warranty does not cover accidental damage, wear or
tear, or consequential or incidental loss. This warranty does not cover any defects caused by wrong transportation, storage,
installation, or operating (see specifications).
Technical support: In the unlikely event that you encounter a problem with your Comeco unit, please call your local dealer or
. . . . . . . . . . . . . . . . Retailer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(date)
Buyer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QD-8.2.4-WC, version 03-03
Comeco Ltd., p.o.box 378, 4000 Plovdiv, tel: ++359(0)32-621770, 274749, 634089, fax: 622719
MULTIFUNCTIONAL TWO-PERIOD TIMER
CT 03
OPERATION MANUAL
CT03 is a low-cost microprocessor-based device for time sequence control with a 48x48mm
DIN sized front panel. There are two adjustable time periods forming a time cycle and four
different timing modes. Period duration is adjustable via push-wheel switch on the front
panel. The timer has two contact inputs for external start and HOLD and two output relays for
timing control of processes by switching on and off electrical actuators. The relay action as
well as the start/restart mode can be programmed with a set of parameters.
CT03 is equipped with a three-digit display, indicating the current time, the parameters, or the
operating mode. All modes of operation and parameters are user-programmable through the
front panel keyboard. The extended features of CT03 simplify programming and timing
process monitoring and make it a convenient solution of a wide range of problems.
Please read this Operation Manual before mounting and operating!
v4-11.03
MOUNTING AND WIRING
Mount CT03 into a 45x45mm panel cut-out (Fig.1) and tighten it into place by the snap-on mounting bracket. Wire the timer using
OCTAL connector and strictly following the wire diagram on Fig.2. Do not turn the power supply on while mounting and wiring!
7210
95 max
55 max
51
45
+
0.5
45
+0.5
Fig.1 Fig.2
OPERATING
CT03 has two contact control inputs for external (re)start (START) and time-counting hold-up (HOLD). Combinations of two adjustable
time periods – t1(1st period, beginning after START) and t2 (2nd period or Total time) form 4 different timing modes (see time diagrams
below). The duration of each period is adjustable within one of the following five sub-ranges: 0.00...9.99 sec, 0.0…99.9 sec, 0…999 sec,
0…999 min, and 0…999 min x 10. There are two control outputs - K1, which activates alternatively with t1 and t2, and K2, which
activates for the total cycle time - whose action can be programmed with parameters ACt1, ACt2, rSb1, and rSb2.
MODE 0 MODE 1
one-shut cycle: t1 + t2 repeated cycle: t1, t2, t1, t2,....
tc
K1 (ACt=0)
K2
rSb1=1
rSb1=0
ACt2=1
ACt2=0
rSb2=1
rSb2=0
HOLD HOLD
START START
POWER POWER
t1+th1
t2+th2
K1 (ACt=1)
rSb1=1
rSb1=0
t2+th2
tc
K1 (ACt=0)
K2
rSb1=1
rSb1=0
ACt2=1
ACt2=0
rSb2=1
rSb2=0
t1+th1
t2+th2
K1 (ACt=1)
rSb1=1
rSb1=0
t2+th2
tc
t1 t2
t1 t2
MODE 2 MODE 3
one-shut cycle (t2 - total time) : t1 + (t2-t1) repeated cycle (t2 - total time) : t1, (t2-t1), t1, (t2-t1),....
tc = t2 + th1 + th2
K1 (ACt=0)
K2
rSb1=1
rSb1=0
ACt2=1
ACt2=0
rSb2=1
rSb2=0
HOLD
START
POWER
t1+th1
t2-t1+th2
K1 (ACt=1)
rSb1=1
rSb1=0
t2-t1+th2
HOLD
START
POWER
K1 (ACt=0)
K2
rSb1=1
rSb1=0
ACt2=1
ACt2=0
rSb2=1
rSb2=0
t1+th1
t2-t1+th2
K1 (ACt=1)
rSb1=1
rSb1=0
t2-t1+th2
tc = t2
t1 t2-t1
t1 t2-t1
tc = t2 + th1 + th2
tc - total cycle time; th1, th2 - times when HOLD input holds time counting
PROGRAMMING
