Time Electronics 5012 User manual

5012
Programmable
Switch
Technical Manual
Time Electronics Ltd
Unit 11 Botany Industrial Estate
Tonbridge, Kent, TN9 1RH
Tel: [phone] Fax: [phone]
E-Mail: [email protected]
Web Site: www.TimeElectronics.co.uk
V2 26/06/03

Page 2
Contents
Page
1. Introducing the 5012 3
Installing the 5012 3
Switch connections 6
2. Specifications 8
3. Operation 10
Introduction 10
Front Panel Operation 10
Remote control via the IEEE-488 Interface Bus 10
Commands 14
Data Format Commands 16
Readback of switch settings 17
Programming example 17
4. Technical Description 18
Introduction 18
Digital Board 18
The Relay Board 19
The LED Board 19
5. Fault Diagnosis 20
Introduction 20
Fault check list 20
Fuse replacement 20
Replacement of the digital/relay or LED Boards 21
6. Spare Parts 23
Introduction 23
7. Guarantee and Servicing 24
Guarantee Period 24
Service after guarantee period 24
Returning instruments 24
All Time Electronics' instruments are subject to continuous development
and improvement and in consequence may incorporate minor detail
changes from the information contained herein.

Page 3
The 5012 is a microprocessor controlled, 24 channel switch which may be oper-
ated either manually or by the IEEE - 488 interface bus.
The 5012 offers a wide variety of switching solutions. Applications include A.T.E.,
production, process control and environmental monitoring.
Special relays with multi-layered contacts have been used to give the performance
needed for applications such as thermocouple measurement to current switching.
Local operation is easily performed by entering the required channel on the key-
board. The LED’s directly indicate the selected channels.
Features available in the local mode prove invaluable during system design and
for troubleshooting. The step left and right keys will move all selected channels left
or right one channel. An ‘All Off’ key will immediately turn off all selected channels
and the self test function will select each channel in turn without external bus con-
trol.
Operation over the IEEE - 488 bus is also very simple. To operate a channel just
send the number to the 5012. Again the LED’s will indicate the selected channels.
Another feature of the 5012 is the timing feature. If timing is critical in your applica-
tion, delays may be specified before a channel is turned on or off
The 5012 is constructed in a standard size 19” 2 units high metal case, suitable for
rack mounting.
Installing the 5012
This section contains information about the power requirements, fuses and instal-
lation of the instrument into a 19” rack mount frame.
Grounding Requirements
The instrument is supplied with a three conductor A.C. power lead. This lead must
be connected to a three conductor power supply that has its ground conductor
connected to an electrical earth (safety ground). The power socket and cable both
comply to IEC safety standards.
FOR CONTINUED PROTECTION AGAINST ELECTRICAL
SHOCK, ALWAYS ENSURE THAT THE INSTRUMENT IS
PROPERLY EARTHED.
Section 1 - Introducing the 5012
!

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Power Requirements
You can operate the 5012 from a single phase source rated at 100V A.C., 220V
A.C., or 240V A.C. 50/60Hz.
Line voltage may vary by up to 10% but must not exceed 250V A.C.
The power lead must be wired in accordance with the diagram below.
Be sure that the voltage setting on the instrument is correct before connecting to a
power source and that the correct fuse has been installed.
Setting the line voltage
To alter the line voltage setting, firstly remove the power lead from the instrument.
Remove the fuse holder/voltage setting cartridge from the power connector then
locate and remove the fuse holder.
Rotate until the correct voltage setting is displayed in the window.
Install the correct fuse and replace the cartridge. (800mA for 220/240V A.C. or
1.6A for 110V A.C.)
Bench Use
The instrument may be used free standing by using the tilt feet on the base.
Removal of the transit screws is not necessary.
19” Rack Mounting
Refer to Figure 1.1, removing the feet and transit screws and Figure 1.2, rear fix-
ing detail. To mount the instrument in a 19” rack you must first have the 19” rack
mount kit. (Part No 9728).
First remove the two tilt feet and two standard feet from the base of the instru-
ment.
Then remove the carrying handle.
Fix the two mounting ‘ears’ on each side of the instrument using the two fixing
holes and the 2BA screws.

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Remove the two large transit screws located on the base of the instrument.
Locate the rear support fixings as in Figure 1.2 on the rack and fix using the
screws provided.
Mount the instrument in the rack, locating the two ‘ears’ in the rear support fixings.
Fix the front panel of the unit to the frame using the screws provided.
Figure 1.1
Figure 1.2

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IEEE-488 Connection
This instrument implements the requirements of the IEEE - 488/1978 standard.
The connection is made by a standard 24 pin IEEE connector mounted on the rear
panel. The IEEE address is selected by a DIP switch again on the rear of the in-
strument as shown in Figure 1.3.
Refer to Section 3 for IEEE operations.
Switch Connections
Connections to the 5012 are made via four 37 way Cannon ‘D’ connectors.
Each connector is wired identically and has the contacts of 6 channels.
Each channel has two poles with change over contacts as shown in Figure 1.4.
When the channel is selected the relay contacts change over.
Figure 1.4
Figure 1.3

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The switch connections are identical for each connector and are detailed in Table 1.1
and figure 1.5.
Wiring details of the 37 way ‘D’ connector is shown in Figure 1.5. To wire channels 7-24,
follow the diagram replacing the appropriate channel numbers, i.e. For channels 7, 13
and 19, wire as channel 1 and for channels 8, 14 and 20, wire as channel 2, etc.
Pin 1 has been provided as a ground connection.
Pin Number Channels Pole Connection
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
N/A
1,7,13,19
1,7,13,19
1,7,13,19
2,8,14,20
2,8,14,20
2,8,14,20
3,9,15,21
3,9,15,21
3,9,15,21
4,10,16,22
4,10,16,22
4,10,16,22
5,11,17,23
5,11,17,23
5,11,17,23
6,12,18,24
6,12,18,24
6,12,18,24
1,7,13,19
1,7,13,19
1,7,13,19
2,8,14,20
2,8,14,20
2,8,14,20
3,9,15,21
3,9,15,21
3,9,15,21
4,10,16,22
4,10,16,22
4,10,16,22
5,11,17,23
5,11,17,23
5,11,17,23
6,12,18,24
6,12,18,24
6,12,18,24
N/A
1
2
2
1
2
2
1
2
2
1
2
2
1
2
2
1
2
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
CHASSIS
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
N.O.
N.C.
COM
Figure 1.5
Table 1.1

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Section 2 - Specifications
Interface
Interface Type: IEEE-488/GPIB/HPIB
Device Address: Rear panel switch 0-31
Bus Connection: Standard 24 pin IEEE-4888 connector
Bus Isolation: All switches are isolated from the bus up to
350V.
Switch Specification
Type: 24 way double pole changeover, break before
make.
Contact Res: <40mΩper switch
Contacts: Gold Layer
Operation Time: 20 milli seconds
Operating Life: Up to 200 million operations
Connections: Four 37 way ‘D’ connectors
Rating: 1 Amp @ 30VDC (100VAC)
Thermal EMF’S: Less than 5uV per switch
General Specification
Power Supply: 110V, 220V or 240V A.C. 50/60 Hz
Dimensions: 482 x 381 x 89mm
Programming
Each switch is addressed by its physical position number as shown on the front
panel (1-24). Either a single switch or several may be selected by one command
string. The commands to each switch are separated by a semicolon (;) and the de-
lay option specified by ‘/X/Y’ where ‘X’ is the turn on delay and ‘Y’ is the turn off de-
lay, both in 1/10ths of a second. The complete command string is terminated by ei-
ther a carriage return (CR) or line feed (LF).

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Program Modes
Decimal:
Switches to be turned on are specified by decimal commands. All other switches
are turned off.
Memory +:
Switches to be turned on are specified by a positive decimal command. All other
switches remain unchanged.
Memory-:
Switches to be turned off specified as a negative decimal command. All other
switches remain unchanged.
Delay Option:
Delays the decimal, memory + or - commands by a specified amount (0.1s -
25s). On and Off delays are specified separately.
Hexadecimal:
Turn on switches by a hexadecimal string. All others turn off.
G.E.T.:
Sets the 5012 to execute commands after the Group Execute Trigger command
has been received.
Goto Local:
Sets the 5012 into local mode for operation via the front panel.
Transmit Local:
Instructs the 5012 to send back all its settings.

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Section 3 - Operation
Introduction
The 5012 may be operated in either local or remote modes which is invaluable dur-
ing system design or troubleshooting.
The LED’s on the front panel indicate which channel has been selected. The data
LED will indicate when a command has been received by the IEEE interface or if a
key has been pressed in local mode. A bleep will also be heard when a key has
been pressed.
The 5012 is put into remote mode whenever a valid command is received by the
IEEE Bus. To return control to the front panel, press the Local key.
Front Panel Operation
By using the keypad, any channel may be turned on or off with just a few key
presses.
For example - To turn switches 1 and 22 on, press ‘1’ and ‘ADD+’ for switch 1
then ‘22’ and ‘ADD+’ for switch 22. The LED’s will show that these channels have
been selected.
To turn switch 1 off, leaving 22 on, press ‘1’ and ‘SUB-’. Alternatively to turn all
switches off press the ‘ALL OFF’ key.
If a mistake is made during numeric entry press the cancel key.
If the channel keyed in is invalid, the unit will give a long beep.
The step keys may be used to repeatedly step all the channels selected up or
down one place.
Pressing the ‘Self Test’ Key will initiate the self test sequence. This will step
through each channel, energising the relay and also indicating the channel se-
lected on the front panel.
The Local key will return control back to the front panel when under remote control.
The Reset key will reset the relays, IEEE interface and processor.
Remote Control Via The IEEE - 488 Interface Bus
Computer control of the 5012 via the IEEE interface is both simple and efficient.
A host of features becomes available under remote control.
Single letter or number commands will select or deselect channels, read back
which channels have been selected or set delays between relays operating.
The IEEE - 488 Interface Bus
The IEEE - 488 interface, sometimes called GPIB (General Purpose Interface Bus)
or the HPIB (Hewlett Packard Interface Bus) allows remote control of the instru-
ment by a suitable computer or controller.