For Contact Amplification of Level Switch,Loading and Unloading Controls

RD-1000
RELAY DRIVERGENERAL
RD-1000 RELAY is a relay unit to increase electric contact capacity oflevel switches and other contacts. Contacts in field are driven by low
voltage and small current for safety of operation. Pumps, solenoidvalves, actuators, buzzer lamps and other devices can directly be controlled by Relay Output contact of RD-1000. Also, integrated sequencecontrol function allows loading or unloading controls by using two
points of High and Low level switches. (Caution: RD-1000 RELAY isnot a safety relay for intrinsically safe circuit.)

STANDARD SPECIFICATION・ Power supply: 100 V AC or 200 V AC ±10%, 50/60 Hz(Acceptable 110 V AC or 220 V AC ±10％, 50/60 Hz as special order. Contact

DIMENSION

Tokyo Keiso for other voltages.)・Ambient temp.

: -10 to 50℃・Max supply voltage to field contact: 12 V DC, Terminal 7 〜 8 and 9 〜 0・Max supply current to field contact: 3 mA DC, Terminal 7 〜 8 and 9 〜 0・Max supply voltage of output contact: 250 V AC, 125 V DC, Terminal 4 〜 5and 4 〜 6・Max supply current of output contact: 5 A Terminal 4 〜 5 and 4 〜 6・Max capacity of output contact: 1100 VA AC (Resistance load)
120 W DC (Resistance load)
・Insulation resistance: 100 M Ω by 500 V DC Meggar

・Withstand voltage: 1500 V AC for 1 min.

・Power consumption: Less than 2 VA

BLOCK DIAGRAMRECOMMENDATION FOR INSTALLATION
1) CONTACT AMPLIFICATION
It is possible to amplify a contact point by a set of this RD-1000.
Refer to the following figure.
a. Connect suitable AC power. (100 V AC to terminal 1〜2 and 200
V AC to terminal 1 〜 3)b. Terminal 7 and 8 are to be short circuited by a jumping wire.
c. The field contact is to be connected to terminal 9 〜 0

TG-L931-2E

JAN. 1991

TG-L931-3E

MAR. 2012K

RELAY DRIVER

RD-1000

to Terminal 90

to Terminal 78

HIGH ALARMLEVEL UPOPEN
SW2LOW ALARMLEVEL DOWN
CLOSE
SW1d. The action of output contact is shown below. Select the necessary
action for wire connection.
B) UNLOADING CONTROLS

Output Relay Action

Field Switch Action
Terminal 9〜0

NO 4〜5

NC 4〜6ONONOFFOFFOFFON

Pump control is required for the feed-water control as shown in thefollowing table.

Relay output2) LOADING AND UNLOADING CONTROLSIt is possible to control a pump by connecting 2 contacts with RD1000. Refer to the following table about the state of output contactsof RD-1000 by the change of liquid and the action of contacts.
State of each switch

Change of liquid level

State of output contact(at RD-1000 side)
NO sideNC side
4〜5
4〜6

SW1
7〜8

SW2
9〜01

OFF

OFFOFFON

2

OFFON

OFFON

3

ONONONOFF4

OFFON

ON

OFFa. Connect suitable AC power. (100 V AC to terminal 1〜2 and 200
V AC to terminal 1 〜 3)b. Connect field contacts of High and Low referring to the following
figures.
c. Do not use Common line for High level alarm switch and Low level
alarm switch. Two cables from each switch are to be separated.

A) LOADING CONTROLS
Pump control is required for the feed-water control as shown in theto Terminal 78

following table.
Relay output

to Terminal 90

HIGH ALARMLEVEL UP
CLOSE
SW1LOW ALARMLEVEL DOWN
OPEN
SW2

a. Connect suitable AC power. (100 V AC to terminal 1〜2 and 200
V AC to terminal 1 〜 3)to Terminal 90

b. Connect field contacts of High and Low referring to the followingfigures.
c. Do not use Common line for High level alarm switch and Low level
alarm switch. Two cables from each switch are to be separated.

to Terminal 78

to Terminal 78

to Terminal 90

HIGH ALARMLEVEL UP
CLOSE
SW12

HIGH ALARMLEVEL UPOPEN
SW2LOW ALARMLEVEL DOWN
CLOSE
SW1

LOW ALARMLEVEL DOWN
OPEN
SW2

TOKYO KEISO CO., LTD.

TG-L931-3E

RD-1000

RELAY DRIVER

CAUTIONS FOR INSTALLATION
a. RD-1000 is designed for indoor use. Install at the location in clean environment free from humidity, dust etc.
b. Fix RD-1000 properly on control panel or other suitable location by using M5 bolts.
c. Use compression terminal tips for firm connection of wiring.

Level Switches
Various level switches are available for level detection.

FB-7000
1-point, installed at side, with microswitch

FB-5000
1-point, installed at side, with reed switch

FP-4000
Multipoint, installed at top, with reed switch

FM Mag Gauge
Metal tube level gauge, with reed switch*The Technical Guidance is available for each model. Contact us for details.

* Specification is subject to change without notice.

Head Office : Shiba Toho Building, 1 – 7 – 24 Shibakoen, Minato-ku, Tokyo 105 – 8558
Tel : +81-3 – 3431 – 1625 (KEY) ; Fax : +81-3 – 3433 – 4922
e-mail : overseas.sales@tokyokeiso.co.jp ; URL : http://www.tokyokeiso.co.jp
TG-L931-3E

TOKYO KEISO CO., LTD.

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