Guralp Systems Limited
MAN-ESP-0001 - 3ESP - Operator's Manual

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1. Preliminary Notes 2. Introduction 3. Installing the 3ESP 4. Calibrating the 3ESP 5. Accessories 6. Inside the 3ESP 7. Appendices

Section Index: 7.1. Appendix A - Connector pin-outs 7.2. Appendix B - Specifications 7.3. Appendix C - Revision history

Chapter 7. Appendices

7.1 Appendix A - Connector pin-outs

7.1.1 Sensor and control unit output

This is a standard 26-pin “mil-spec” plug, conforming to MIL-DTL-26482 (formerly MIL-C-26482). A typical part-number is ***-16-26P where the '***' is defined by the manufacturer.

Suitable mating connectors have part-numbers like ***-16-26S.

The 26-pin connectors on the breakout box have identical pin-outs.

Pin

Function

Pin

Function

A

Velocity +ve, vertical channel

P

Calibration signal (all channels)

B

Velocity –ve, vertical channel

R

Calibration enable, Z channel

C

Velocity +ve, N/S channel

S

Calibration enable, N/S channel

D

Velocity –ve, N/S channel

T

Calibration enable, E/W channel

E

Velocity +ve, E/W channel

U

Centre

F

Velocity –ve, E/W channel

V

not connected

G

Mass position, vertical channel

W

Unlock

H

not connected

X

Lock

J

Mass position, N/S channel

Y

Logic ground

K

BUSY LED

Z

not connected

L

Mass position, E/W channel

a

not connected

M

Power –ve (split supply option)

b

Power ground

N

Analogue ground

c

Power +ve

Wiring details for the compatible socket, ***-16-26S, as seen from the cable end (i.e. when assembling).

7.1.2 Breakout box DC power connector

This is a standard 10-pin “mil-spec” plug, conforming to MIL-DTL-26482 (formerly MIL-C-26482). A typical part-number is ***-12-10P where the '***' is defined by the manufacturer.

Suitable mating connectors have part-numbers like ***-12-10S.

Pin

Function

A

0 V

B

+12 V DC supply

C

not connected

D

not connected

E

not connected

F

not connected

G

not connected

H

–12 V DC supply (not used in sensors with internal DC-DC converters)

J

not connected

K

not connected

Wiring details for the compatible socket, ***-12-10S, as seen from the cable end (i.e. when assembling).

7.2 Appendix B - Specifications

Parameter

Specification

Hybrid sensors

0.1 – 50 Hz

Velocity output bandwidth

High pass filter output flat to acceleration

0.01 Hz – spec*

High pass filter output flat to velocity

spec – 50 Hz*

Mass position output

DC – 0.1 Hz

Velocity sensitivity

1400 V/m/s

Acceleration sensitivity

2000 V/m/s2

Velocity sensors

Velocity output bandwidth

spec – 50 Hz*

Mass position output

DC – spec Hz*

Velocity sensitivity

2 × 750 V/m/s

Mass position sensitivity

1000 V/m/s2

Mass locking and unlocking

manual; optional remote operation

Mass centring

automatic, MPU controlled

Sensors

3 orthogonal, each 0.180 kg

Lowest spurious resonance

above 140 Hz

Total weight

11 kg

Sensor transducer type

capacitive displacement

Feedback transducer type

magnet/coil

Connector

pressure tight

Temperature range with masses locked

–35 to +75 °C

Operational temperature range

–20 to +65 °C**

Input voltage

10 – 36 V

Current at 12 V DC

75 mA†

Current at 12 V DC during calibration

100 mA†

Current at 12 V DC during centring

330 mA†

Current at 12 V DC during locking and unlocking

490 mA†

*spec refers to the quoted frequency response value, e.g., for a “30 s” sensor, the value of spec would be 30 s = 0.033 Hz.

**Temperatures below –20 °C may be accommodated with additional care. Please consult Güralp Systems for advice.

†Because centring, locking, and unlocking consume varying amounts of power, it is recommended that you use a power supply capable of delivering 1 A at 12 V.

7.3 Appendix C - Revision history

2010-04-28

A

New document

2006-02-21

C

Updates; added revision history

2006-11-15

D

Redrawn diagrams

2011-03-18

E

Changes to vault procedures, formatting updates

2011-08-23

F

Corrections to connector pin-out

2016-02-18

G

Corrections to connector pin-out

Previous

1. Preliminary Notes 2. Introduction 3. Installing the 3ESP 4. Calibrating the 3ESP 5. Accessories 6. Inside the 3ESP 7. Appendices