red lion Astro Line Series Instruction Manual Download

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PRIMARY A.C. WIRING

For best results, the A.C. primary power should be relatively “clean” and within

the spe/-10% variation limits. Drawing power from heavily loaded circuits
or from circuits that also power loads that cycle on and off, should be avoided.

The AC power is connected to the bottom left terminals TBA 1 & 2, marked as

AC Power, 50/60 Hz. The voltage selector switch, located on the side of the unit,
is used to select the proper voltage. The switch is a slide movement type and can
be set by using a small screwdriver. If the switch is towards the front of the unit, it
is set for 230 VAC input. The switch is in the 230 VAC position when shipped
from the factory.

Note: Before applying power to the unit, make sure the AC power selector switch

is set for the proper voltage setting.

USING AN EXTERNAL DC POWER SOURCE

The Gemini 5200 can be operated from a D.C. power source that provides

11-14 VDC at the unit’s rated power consumption (700 mA). The power source
can be a 12 V battery or an external power supply that is capable of supplying the
unit’s rated current. It is not necessary to provide battery backup to retain
programming information. The Gemini 5200 has an internal non-volatile
memory in which the programming information is stored upon power-down.
Refer to the “Block Diagram” section.

RELAY WIRING

To prolong contact life and suppress electrical noise interference due to the

switching of inductive loads, it is good installation practice to install a snubber
across the contactor. Follow the manufacturer’s instructions for installation.

Note: Snubber leakage current can cause some electro-mechanical devices to be

held ON.

SERIAL COMMUNICATIONS

The Gemini 5200 can be purchased with a 20 mA Current Loop

Communications Option. On these units, refer to the “Current Loop
Communications” section of the manual for wiring and operational procedures
of the Serial Loop.

INPUTS A & B AND MAGNETIC PICKUP INPUTS A & B

The Gemini 5200 has two input channels. Input Channel A is associated with

Rate Display A and Channel B is associated with the Rate Display B. The
Magnetic Pickup Input and the Logic Input of each channel utilize some common
circuitry. For this reason the Input switches are used to set up both the Magnetic
and Logic Input.

S1 selects between Magnetic Pickup Input A and Logic Input A. S5 selects

between Magnetic Pickup Input B and Logic Input B. WHEN MAGNETIC
PICKUP A IS BEING USED, S2 MUST BE IN THE “SNK” POSITION or the
unit will not display the rate properly. Likewise, WHEN MAGNETIC PICKUP
B IS BEING USED, S6 MUST ALSO BE IN THE “SNK” POSITION.

S3 (HI/LO FRQ) and S4 (HI/LO BIAS) or S7 (HI/LO FRQ) and S8 (HI/LO

BIAS) do not effect the Magnetic Pickup Inputs A & B and their settings are
inconsequential. When S1 or S5 is in the Logic position, the Magnetic Pickup
Input A or B is disabled and Inputs A or B can be used as logic inputs.

Note: A Magnetic Pickup type sensor should not be used unless a large enough

signal is provided at all speeds of operation.

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