ChronTrol 2 User manual

Form #XW-98A
ChronTrol®
SPECIFICATIONS and INSTALLATION
WALL MOUNT–DRY CONTACT
2, 4, & 6 CIRCUIT MODELS
SPECIFICATIONS
Dimensions: 8" x 10" x 4" (H/W/D) / 203mm x 254mm x 100mm
Face: 14 Gauge zinc-plated steel (non-weatherproof)
Shipping Weight: 9 lb./ 4 kg.
Environmental Range: 0° F to 130° F/-17° C to 54° C; 0 to 90% relative humidity (non-condensing)
Power Source: 120 Volts AC ± 5% Optional: 240 volts AC ± 5%
Time Base: 50/60 Hz Line Frequency (automatically selected) with Crystal backup system
Power Consumption: 4 watts not including switching circuits
Number of Circuits: 2, 4, or 6 independent circuits
Relays: 20 Amp Single-Pole Double-Throw (SPDT) with 1/4" “Quick connect” contacts
Number of Inputs: 8 digital inputs, 9-position D-subminiature (DE-9) connector
Display: .56" Continuous LED display of Time of Day or program information
Keyboard: 24-key, dome switch, audible
Battery Backup: 9-volt alkaline system provides 14-day protection of memory and Time of Day
Power Switching: 0 to 277 Volts
20 Amperes per circuit at 240 VAC
6 Amperes per circuit at 277 VAC
Circuit Status Indicators: LED circuit "ON" indicator (one per circuit)
Serial Communication: Asynchronous, 2400 baud, 8 data bits, 1 stop bit, no parity
Signal Level: EIA RS-232C
Connection: 6-position, 4-conductor modular jack (RJ-12 type)
Input Drive Requirement: Switch closure between input pin and common pin
Max. switch resistance: 1000 ohms
Minimum closure time: 50mS (1/20 second)
Maximum closure time: Indefinite
Maximum input latency: 1 second
Maximum switch current: 500µA

INSTALLATION
ChronTrol is a precision electronic timer designed for installation indoors in a place protected from excess moisture and
temperature conditions. It is made to National Electrical Code requirements and is designed for a standard three-wire system.
CAUTION: The ChronTrol Wall Mount timer should be wired and installed by a qualified electrician.
1. After removing the timer from its shipping container, examine it carefully to be sure that it has not been damaged during
shipment. Remove all shipping material.
2. Carefully remove the ChronTrol chassis from its 8" x 10" x 4" gray enclosure.
3. Securely mount the gray enclosure in place.
4. Unwind the two power supply wires. Turn the main power switch of the home or business OFF. Connect the ground
wire from ChronTrol's chassis to a solid earth ground. Now connect the AC power supply wires. Turn the main power
switch ON. The timer is now "ON".
5. Now activate ChronTrol's memory protection system by installing the battery in the battery compartment located on
ChronTrol's front panel. Use a single 9-volt alkaline battery. For best results, use reliable, fully charged batteries.
6. Now turn the main power switch of the home or business OFF and connect the equipment to be controlled to the
relays.
7. If timer is equipped with a connector for inputs, attach a ChronTrol I-Box or other suitable accessory. Pin assignments
are:
8. After all equipment has been connected and the chassis mounted in its gray enclosure, turn the main power switch ON. The
timer is now ready to be programmed. See the XT User's Guide for programming instructions.
WALL MOUNT DRY CONTACT WIRING
The single pole-double throw relay is standard on the "wall mount" model and can be used to operate two devices, the one
being "ON" when the other is "OFF". One wire of the equipment is connected to the normally open (NO) contact on
ChronTrol's relay. Another wire connects the power source to the common (C) contact on ChronTrol's relay. The third
wire is connected directly from the equipment to the power source. Wire the optional second appliance between the power
source and the normally closed (NC) relay contact as shown below.
Single Pole - Double Throw (SPDT) Circuit
Copyright 2001 ChronTrol Corporation
6160 Fairmount Avenue
San Diego, CA 92120
[phone]
COMMON INPUT #1
INPUT #4 INPUT #8
AC
POWER
NO NC C
ChronTrol
LOAD 2
LOAD 1