Cooper Instruments SCR 120E Installation Manual

SCR 120E/200E/250E

Flat-Bed Recorders

User’s Guide

www.cooperinstruments.com

PH: 540-349-4746 • FAX: [phone]

TABLE OF CONTENTS

1. Introduction............................................................................................................................. 1

2. Top View.................................................................................................................................2

3. General Description................................................................................................................ 3

4. Change of Paper......................................................................................................................4

5. Change of Pens........................................................................................................................ 4

5.1 Refill Pens....................................................................................................................... 5

5.2 Cleaning the Pen Carriage Rod....................................................................................... 5

6. Chart Drive Control Panel....................................................................................................... 5

7. Range Selection and Pen Control Panel.................................................................................. 5

8. Rear Panel View......................................................................................................................6

9. Troubleshooting ...................................................................................................................... 6

9.1 Change Fuses .................................................................................................................. 7

9.2 Restringing the Servo Unit..............................................................................................7

10. Technical Data .................................................................................................................... 8

11. Warranty Repair Policy....................................................................................................... 9

CF 129 ii SCR 120E

1. Introduction

Congratulations!
With the purchase of this flatbed recorder you have acquired an instrument that represents the successful
culmination of many years of intensive research and development. We placed special emphasis on
reliable operation and in design and construction of this instrument, user-friendly handling and user­oriented possibilities.

A large part of the electronic is mounted on hybrid ceramics carrier material. High reliability and best
protection against interferences from outside result in this concept.

Recorders of the SCR 120E, 200E and 250E work with chart width of 120, 200 and 250 mm. The
recorders use a null balancing potentiometric system for one or for two independent channels. Each
channel is built for voltages from 1 mV -50V.

The pens for both channels are exactly the same and can be easily changed. If not used, they are stored
in adapters to avoid getting dry.

Your recorder is built and tested in accordance with VDE 57411 part 1/VDE 0411 part 1 (protection
arrangement for electronic measuring instruments), EMD and FCC regulations, and it left our company in
a perfect technical shape thus, we call it proven security.

Warning:

To ensure safe operation, please pay attention to all instructio ns and warnings which are included in this
manual. The recorders of the SCR 120E, 200E and 250E are suitable for horizontal use. Please ensure
that the recorder is not placed nearby a source of heat or acid vapors. Make sure that the adjusted line
voltage is the same as the mains voltage before you switch on the recorder.

If not otherwise specified, the recorder is set to:
230V 50 -60 Hz in UK
115V 50 -60 Hz in USA

Be sure that the power cord is plugged in before you connect any input and/or cont rol signals.

Warning:

Each disconnection of internal and external ground wires (green/yellow coded wires) may cause the
instrument to become dangerous. Please ensure that the maximum voltages between the inputs and

ground and the maximum input voltages are not higher than 50 Vpp.
Make sure that only fuses of the specified type and with the specified rated current are used for

exchange. It is not allowed to use repaired fuses or to short the fuse holder. If riskless operation is not
possible anymore, set the recorder out of operation and avoid unintentional use.

Riskless operation is not possible,

• if the recorder has visible damages

• if the recorder does not work anymore

• after longer storing under cad conditions

• showing heavy transport damage

CF 129 1 SCR 120E

2. Top View

1 Place to park pens, avoids drying out
2 Chart drive control panel
3 Range selection and pen control
4 Paper guides
5 Manual paper transport knob
6 Rear panel view
7 Mains power cord

CF 129 2 SCR 120E